Prestige 9900 Electric Toothbrush

Philips Sonicare Prestige 9900

The Philips Sonicare 9900 Prestige is a rechargeable electric toothbrush designed for daily cleaning of teeth, gums, and tongue. It combines sonic brushing technology with SenseIQ sensors that monitor brushing pressure and movement to provide feedback during use.

The toothbrush includes a Premium All-in-One (A3) brush head, three intensity settings, BrushSync technology, a pressure sensor, Adaptive Intensity, and a six-section BrushPacer timer. It also connects to the Sonicare app through Bluetooth, allowing brushing modes, intensity, and feedback settings to be personalized.

The Philips Sonicare 9900 Prestige comes preset with a two-minute All-in-One Clean brushing routine. Additional brushing settings can be selected using the Sonicare app and stored on the toothbrush.

Product Overview and Features

The Sonicare 9900 Prestige is intended for home oral care. Its powered brushing action helps remove plaque and food debris from the teeth to maintain oral health.

The toothbrush uses integrated sensors to observe brushing habits and provide feedback about excessive pressure and scrubbing movements.

Main Features

SenseIQ Technology

SenseIQ combines several smart features that observe brushing movements, habits, and brush head selection.

Its functions include:

• Adaptive Intensity.
• Pressure Sensor Feedback.
• Scrubbing Feedback.
• Personalized recommendations through the Sonicare app.
• Brushing behavior feedback through the app.

The SenseIQ indicator on the toothbrush handle illuminates when the smart features are active during brushing or when certain settings are activated or deactivated.

What’s Included in the Box

The Philips Sonicare 9900 Prestige product illustration identifies the toothbrush and its charging accessories.

The supplied accessories may vary according to the purchased configuration.

Parts and Components

The toothbrush has a rechargeable handle, a removable brush head, built-in indicators, and USB charging accessories.

Main Components

Buttons, Controls, and Indicator Lights

The Sonicare 9900 Prestige uses a Power On/Off button, a hidden intensity control, and several indicator lights.

Control Panel Guide

Light Colors and Their Meanings

Technical Specifications

Approved Charging Equipment

The battery safety instructions identify the following charging equipment:

Use only the supplied and approved charging equipment.

Do not use an extension cord to charge the toothbrush.

Important Safety Instructions

The Philips Sonicare 9900 Prestige contains electrical components and a rechargeable lithium-ion battery. Proper handling is necessary to reduce the risk of electric shock, burns, fire, and physical injury.

Electrical Safety

• Keep the USB wall adapter and charging equipment away from water.
• Do not place or store the toothbrush where it may fall into a sink or bathtub.
• Do not immerse the charging equipment in water or another liquid.
• Do not use the toothbrush while bathing.
• If an electrical product falls into water, disconnect its power supply immediately. Do not reach into the water to retrieve it while connected.
• Make sure the USB wall adapter is completely dry before connecting it to an electrical outlet.
• Do not use a damaged USB wall adapter.
• Stop using the toothbrush if the brush head, handle, charging base, or charging travel case is damaged.
• Keep electrical cords away from heated surfaces.
• Do not use the charger outdoors.
• Do not use a charger that has fallen into water.

Warning: The charging base cord cannot be replaced. If it becomes damaged, discard the charging base.

Replace damaged USB adapters and chargers only with approved original types.

Battery Safety

• Charge, operate, and store the toothbrush only at temperatures between 0°C and 40°C.
• Do not expose the toothbrush or its battery to fire, direct sunlight, or excessive temperatures.
• Do not leave the product in hot vehicles or near stoves.
• Do not place the toothbrush in a microwave oven or on an induction cooktop.
• Do not open the toothbrush to replace its rechargeable battery during its usable life.
• Do not modify, puncture, damage, or disassemble the battery.
• Do not short-circuit, overcharge, or reverse-charge the battery.
• Keep the toothbrush and battery dry when handling the battery.

If the toothbrush becomes unusually hot, produces an abnormal smell, changes color, or requires much longer than usual to charge, stop using and charging it and contact Philips.

A damaged or leaking battery must not come into contact with skin or eyes. If contact occurs, rinse immediately with water and seek medical care.

Medical Precautions

• Consult a dental professional before using the toothbrush if oral or gum surgery was performed within the previous two months.
• Contact a dentist if excessive bleeding occurs after brushing or if bleeding continues after one week of use.
• Consult a doctor or the implanted device manufacturer before using the toothbrush if a pacemaker or another implanted medical device is present.
• Consult a physician before using the toothbrush if there are medical concerns.
• Stop using the toothbrush and consult a physician or dentist if pain or discomfort occurs.

Safe Use Around Children

The toothbrush may be used by children aged eight years or older when they receive appropriate supervision or instructions and understand the risks.

People with reduced physical, sensory, or mental capabilities may also use the appliance under suitable supervision or instruction.

Children must not play with the toothbrush.

Cleaning and user maintenance must not be performed by children without supervision.

General Operating Safety

• Use the toothbrush only for cleaning teeth, gums, and tongue.
• Use only accessories recommended by Philips Sonicare.
• Do not place the brush head, handle, charger, or charging accessories in a dishwasher.
• Do not attempt to repair the handle or other internal components.
• Stop using any damaged component and contact Philips Consumer Care.

Before First Use

Before brushing for the first time, attach the brush head and charge the toothbrush.

Attaching the Premium All-in-One A3 Brush Head

1. Remove the toothbrush and brush head from the packaging.
2. Position the A3 brush head above the metal shaft.
3. Push the brush head firmly downward onto the handle.
4. Make sure the brush head is securely fitted.

A small visible gap between the brush head and handle is normal. The gap allows the brush head to vibrate correctly.

Charging the Toothbrush for the First Time

1. Connect the charging base USB cord to the supplied USB wall adapter.
2. Plug the wall adapter into an electrical outlet.
3. Attach the charging stand to the charging base.
4. Place the toothbrush handle onto the charging stand.
5. Check for the charging confirmation signals.

The toothbrush emits two beeps when charging begins successfully.

The battery indicator blinks white while charging.

A complete charge may take up to 16 hours.

How to Use the Philips Sonicare 9900 Prestige

The toothbrush uses a powered brush head and a timed brushing routine.

The correct brushing technique involves gentle pressure and slow movements along the teeth and gumline.

Step-by-Step Brushing Instructions

1. Attach the Premium All-in-One A3 brush head.
2. Wet the bristles.
3. Apply a small amount of toothpaste.
4. Place the bristles against the teeth at approximately a 45-degree angle.
5. Apply light pressure so the bristles reach the gumline or slightly beneath it.
6. Keep the center of the brush head in contact with the teeth.
7. Press the Power On/Off button.
8. Move the brush head slowly across the teeth using small back-and-forth movements.
9. Allow the longer bristles to reach between the teeth.
10. Follow the BrushPacer signals to move between the six brushing sections.
11. For the inside surfaces of the front teeth, hold the brush semi-upright.
12. Make several overlapping vertical brushing strokes on each front tooth.
13. Continue until the brushing cycle finishes.
14. Allow the toothbrush to switch off automatically.

Correct Brushing Pressure

The toothbrush is designed to do the brushing work without forceful scrubbing.

The bristles should spread slightly during use.

Important: Do not scrub the teeth aggressively.

If too much pressure is applied, the handle changes its vibration and the brushing feedback light flashes purple.

Reduce pressure when this alert occurs.

Using the Toothbrush with Braces and Dental Restorations

The Sonicare Prestige toothbrush can be used with:

• Braces.
• Dental modifications.
• Fillings.
• Crowns.
• Veneers.

Brushing Modes and Settings

The toothbrush comes preset with an All-in-One Clean brushing routine.

The default program lasts two minutes and uses BrushPacer to divide the mouth into six brushing sections.

Additional brushing modes and settings can be selected through the Sonicare app.

Default All-in-One Clean Mode

The default brushing mode provides a two-minute brushing session.

During the cycle:

1. Begin brushing the first section.
2. Follow the BrushPacer vibration signal.
3. Move to the next section when prompted.
4. Continue until all six sections have been brushed.

The toothbrush automatically stops when the session finishes.

Additional Brushing Modes

The Sonicare app allows the selected brushing mode to be customized.

The manual also identifies White+ and Gum Health modes as examples that may add brushing segments beyond the standard six-section routine.

Mode descriptions and settings are available within the Sonicare app.

How to Change the Brushing Mode

1. Open the Sonicare app.
2. Connect the toothbrush through Bluetooth.
3. Open the toothbrush settings.
4. Access the mode controls.
5. Select the desired brushing mode.
6. Save the selected setting through the app.

The selected mode is stored on the toothbrush.

A separate mode name does not appear on the toothbrush handle.

Adjusting Brushing Intensity

The Philips Sonicare 9900 Prestige has three intensity settings.

How to Change Intensity from the Handle

1. Locate the intensity indicator lights on the handle.
2. Press the hidden button in the intensity indicator area.
3. Continue pressing to cycle through the available levels.
4. Stop when the required intensity is selected.

The intensity can be changed before, during, or after brushing.

Changing Intensity Through the Sonicare App

1. Connect the toothbrush to the Sonicare app.
2. Open the intensity settings.
3. Select the preferred level.
4. Apply the selected setting.

The app also allows other brushing preferences to be customized.

SenseIQ Technology

SenseIQ monitors brushing behaviors and provides feedback to support correct brushing technique.

The sensors observe information such as brushing motion, habits, and brush head selection.

SenseIQ Functions

The SenseIQ indicator illuminates during brushing when the smart features are active.

It also provides confirmation when certain settings are enabled or disabled.

Pressure Sensor Feedback

The pressure sensor measures the force applied to the teeth and gums.

If excessive pressure is detected:

1. The handle changes its vibration.
2. The brushing feedback light at the bottom of the handle flashes purple.
3. The warning continues until brushing pressure is reduced.

Pressure Sensor Feedback is activated by default.

What Does the Purple Light Mean?

A flashing purple light means the toothbrush has detected excessive brushing pressure.

Reduce the force applied to the teeth and gums.

The warning stops when the pressure is reduced.

How to Turn Pressure Sensor Feedback On or Off

1. Place the toothbrush on the charging stand.
2. Press and hold the Power button for up to seven seconds.
3. Release the button after the sequence of one beep, two beeps, and then three beeps.
4. Check the confirmation indicators.

The SenseIQ indicator and light ring illuminate purple for three seconds during the setting confirmation.

The battery indicator and confirmation tones indicate whether the feature was activated or deactivated.

Adaptive Intensity Function

Adaptive Intensity automatically lowers the brushing intensity when excessive pressure continues for an extended period.

The toothbrush reduces the selected intensity by one level.

A short pause in pressure feedback occurs while the intensity changes.

How Adaptive Intensity Works

1. Begin brushing using the selected intensity.
2. If excessive pressure continues, the toothbrush detects it.
3. The intensity automatically decreases by one level.
4. Continue brushing with the adjusted intensity.

The toothbrush returns to the previously selected intensity at the beginning of each new brushing cycle.

Adaptive Intensity is enabled by default.

Important: Disabling the pressure sensor also disables Adaptive Intensity.

How to Turn Adaptive Intensity On or Off

Adaptive Intensity can be changed from the toothbrush handle or the Sonicare app.

From the handle:

1. Place the toothbrush on the charging stand.
2. Press and hold Power for up to three seconds.
3. Release the button after the first beep.
4. Check the SenseIQ indicator and confirmation lights.

The SenseIQ indicator illuminates for three seconds during the setting confirmation.

Scrubbing Feedback

Scrubbing Feedback monitors brushing movements and detects repeated scrubbing behavior.

The feature is disabled by default.

If the Sonicare app detects regular scrubbing movements, it may recommend enabling this function.

What Happens When Scrubbing Feedback Is Activated?

If excessive scrubbing is detected:

• The brushing feedback light illuminates amber.
• The handle changes its vibration.
• The alert reminds the user to stop scrubbing.

The amber feedback light turns off when the scrubbing movement stops.

How to Enable Scrubbing Feedback

1. Open the Sonicare app.
2. Connect the toothbrush.
3. Open the toothbrush feedback settings.
4. Find Scrubbing Feedback.
5. Enable the feature.

The same app setting can be used to disable it.

BrushPacer Timer

BrushPacer divides the brushing session into six equal sections.

A short pause in vibration indicates when it is time to move to the next area.

How BrushPacer Works

1. Begin the brushing cycle.
2. Brush the first section.
3. Wait for the short vibration pause.
4. Move to the next section.
5. Repeat until all six sections are complete.

The toothbrush automatically switches off at the end of the selected brushing program.

For the default two-minute program, each of the six sections receives approximately 20 seconds.

White+ and Gum Health modes may include additional brushing sections.

BrushSync Technology

BrushSync allows a compatible brush head to communicate with the toothbrush handle using an integrated microchip.

The BrushSync symbol near the bottom of the brush head identifies compatible smart technology.

BrushSync Functions

BrushSync supports:

• Brush head replacement reminders.
• Mode pairing for compatible Tongue Care brush heads.

Brush Head Replacement Reminder

The toothbrush tracks brush head wear using:

• Overall brushing pressure.
• Total brushing time with the installed brush head.

When the brush head is no longer effective:

1. The replacement reminder indicator blinks amber.
2. The handle produces a series of beeps and tones.
3. The brush head should be replaced.

The replacement reminder is enabled by default.

How to Turn the Brush Head Replacement Reminder On or Off

1. Place the toothbrush on the charging stand.
2. Press and hold the Power button for up to five seconds.
3. Release after hearing one beep followed by two beeps.
4. Check the confirmation indicators.

The brush head replacement reminder indicator illuminates for three seconds.

The battery light and confirmation tones indicate whether the function is activated or deactivated.

Activating and Deactivating Toothbrush Features

Several smart functions can be enabled or disabled from the toothbrush handle.

Button-Hold Settings

Confirmation Indicators

Activation and Deactivation Signals

Adaptive Intensity and Scrubbing Feedback can also be enabled or disabled using the Sonicare app.

Connecting the Philips Sonicare 9900 Prestige to the App

The Sonicare app connects to the toothbrush through Bluetooth.

It allows brushing preferences to be customized and provides feedback about brushing habits.

Sonicare App Features

The app provides:

• Brushing mode selection.
• Brushing intensity settings.
• Adaptive Intensity controls.
• Scrubbing Feedback controls.
• Brushing progress tracking.
• Personalized oral care recommendations.
• Brushing behavior feedback.
• Firmware updates when available.

The app is compatible with a range of iPhone and Android smartphones.

How to Pair the Toothbrush with the Sonicare App

1. Download the Sonicare app to a compatible smartphone.
2. Turn on Bluetooth on the phone.
3. Pick up the toothbrush so its indicator lights become active.
4. Open the Sonicare app.
5. Follow the guided setup process.
6. Pair the toothbrush with the app.
7. Create an account.
8. Complete any firmware update if requested.
9. Begin using the toothbrush with the connected app.

For additional setup information, visit:

https://www.philips.com/Prestige-Get-Started

Manual Synchronization

To synchronize manually, connect the toothbrush to the Sonicare app every couple of weeks.

This allows the app to update brushing information and provide current feedback.

Automatic Synchronization

Automatic synchronization uses location permission to recognize when the phone is within connection range of the toothbrush.

During app setup:

1. Allow location permission if automatic synchronization is desired.
2. Keep Bluetooth enabled.
3. Keep the smartphone within connection range.

The Sonicare app can then refresh brushing data when the connection is available.

The Sonicare Privacy Statement is available during app setup.

Charging the Philips Sonicare 9900 Prestige

The toothbrush supports charging through the charging base and compatible charging travel case.

A complete battery charge may take up to 16 hours.

Charging with the Charging Base

1. Connect the USB cord from the charging base to the USB wall adapter.
2. Plug the adapter into an electrical outlet.
3. Place the charging stand onto the charging base.
4. Position the toothbrush handle on the stand.
5. Check the charging confirmation.

When charging starts successfully:

• The toothbrush emits two beeps.
• The indicator lights illuminate upward along the handle.
• The battery indicator blinks white.

Leave the toothbrush on the charging stand until charging is complete.

The battery light stops blinking and turns off when the handle finishes charging.

Charging with the Travel Case

1. Connect the USB cord to the charging travel case.
2. Connect the other end to the USB wall adapter.
3. Plug the adapter into an electrical outlet.
4. Open the travel case.
5. Place the toothbrush inside the case.
6. Check that charging begins.

The handle emits two beeps and its lights illuminate upward when charging starts successfully.

The battery indicator blinks white during charging.

Leave the travel case connected until charging is complete.

Important: Place the charging travel case on its side for better stability.

Battery Indicator Lights and Charging Status

The battery indicator communicates whether the battery is charging, fully charged, partially charged, low, or empty.

Battery Status While Charging

Battery Status When Not Charging

What Does a Blinking Amber Battery Light Mean?

A blinking amber battery indicator means the battery is low or empty.

The beep pattern distinguishes the condition.

Three beeps after brushing indicate a low battery.

Two sets of beeps indicate that the battery is empty.

Place the toothbrush on the approved charging base or charging travel case to recharge it.

Cleaning Instructions

The Philips Sonicare 9900 Prestige should be cleaned regularly to remove toothpaste residue and keep the brush head connection area clean.

Cleaning the Brush Head

1. Remove the brush head from the handle.
2. Rinse the brush head thoroughly with warm water.
3. Remove visible toothpaste residue.

Cleaning the Toothbrush Handle

1. Remove the brush head.
2. Rinse the handle using warm water.
3. Pay particular attention to the brush head connection.
4. Gently clean around the rubber seal.
5. Do not press or push against the rubber seal.

The brush head connection area should be cleaned at least once per week.

Cleaning the Charger

1. Disconnect the charger from the electrical outlet.
2. Use a damp cloth to wipe its exterior surfaces.
3. Make sure the charger is completely dry before reconnecting it.

Cleaning the Charging Travel Case

1. Unplug the charging travel case.
2. Wipe the case using a damp cloth.
3. Allow the case to dry before using it for charging.

Cleaning Products to Avoid

Do not use:

• Isopropyl alcohol.
• Vinegar.
• Bleach.
• Other household cleaning products.
• Essential oils.

These substances may discolor or damage the toothbrush and accessories.

Important: Do not clean any component in a dishwasher.

Make sure both the brush head and toothbrush handle are dry before storing them in the travel case.

Maintenance Instructions

Regular cleaning and correct operation help maintain the toothbrush and charging accessories.

Recommended Maintenance Tasks

Replacing the Brush Head

The BrushSync replacement reminder indicates when a compatible smart brush head needs replacement.

When the reminder flashes amber and the toothbrush emits the associated tones:

1. Remove the used brush head.
2. Position the new Philips Sonicare brush head over the metal shaft.
3. Push it firmly downward.
4. Make sure it is correctly attached.

Use genuine Philips Sonicare replacement brush heads.

Storage Instructions

If the toothbrush will not be used for an extended period:

1. Disconnect the charging equipment from the electrical outlet.
2. Clean the toothbrush and brush head.
3. Make sure the toothbrush and accessories are dry.
4. Store the product in a cool, dry location.
5. Keep it away from direct sunlight.

The toothbrush must be stored within the specified temperature range of 0°C–40°C.

Do not leave the toothbrush in areas exposed to excessive heat.

Troubleshooting and Indicator Guide

The Philips Sonicare 9900 Prestige uses light indicators, vibrations, and beeps to communicate operating conditions.

Common Indicators and Solutions

Why Does the Toothbrush Flash Purple?

A purple flashing light indicates that excessive pressure is being applied.

The handle also changes its vibration.

Reduce pressure until the warning stops.

Why Does the Toothbrush Flash Amber During Brushing?

An amber brushing feedback light indicates that Scrubbing Feedback has detected repeated scrubbing movements.

This alert is available when Scrubbing Feedback is enabled.

Stop scrubbing and move the brush head gently across the teeth.

Why Does the Brushing Intensity Decrease Automatically?

Adaptive Intensity automatically reduces the intensity by one level when excessive pressure continues for an extended period.

At the start of the next brushing cycle, the toothbrush returns to the previously selected intensity.

Why Is the Brush Head Replacement Light Blinking?

The replacement reminder uses BrushSync information to track brush head wear.

When the replacement indicator blinks amber and the handle produces the reminder tones, replace the brush head.

Why Is the Toothbrush Not Synchronizing with the Sonicare App?

Bluetooth must be enabled for brushing information to transfer to the app.

To connect:

1. Turn on Bluetooth on the phone.
2. Pick up the toothbrush to activate it.
3. Open the Sonicare app.
4. Follow the pairing instructions.
5. Keep the phone within connection range during synchronization.

Why Does the Toothbrush Stop After Two Minutes?

The default All-in-One Clean program has a two-minute brushing cycle.

The toothbrush automatically switches off when the session is complete.

Other brushing modes selected through the app may have different brushing segments.

Replacement Brush Heads and Accessories

The Sonicare 9900 Prestige comes with a Premium All-in-One (A3) brush head.

The A3 brush head supports:

• Plaque removal.
• Surface stain removal.
• Gum care.

The brush head includes BrushSync technology, identified by the symbol near its base.

Replacement Brush Heads

Use genuine Philips Sonicare brush heads to maintain the intended performance.

For available replacement options, visit:

https://www.philips.com/toothbrush-heads

Charging Accessories

Use approved Philips charging equipment.

The specified charger and adapter model numbers include:

• WAA1001.
• WAA200.
• HX9200.
• HX9200/B.
• TCC1001.
• TCC2001.
• TCC3001.
• CBB1001.
• CBB2001.

Damaged charging equipment must not be used.

If the charging base cord is damaged, the charging base must be discarded rather than repaired.

Battery Disposal and Recycling

The Philips Sonicare 9900 Prestige contains a rechargeable lithium-ion battery that must be recycled or disposed of properly.

Electrical products and batteries must not be discarded with ordinary household waste.

Battery Removal

The built-in rechargeable battery must be removed by a qualified professional when the toothbrush is discarded.

Do not open the toothbrush to replace the battery during normal use.

Instructions for professional battery removal are available from Philips support.

Recycling Information

Follow local electrical waste and battery recycling regulations.

Warranty Information

Two-Year Limited Warranty

Philips provides a two-year warranty from the date of purchase.

The warranty covers defects in materials and workmanship.

Philips may repair or replace a qualifying defective product at its expense when valid proof of purchase is provided during the warranty period.

Warranty Exclusions

The warranty does not cover:

• Brush heads.
• Damage caused by unauthorized replacement parts.
• Damage caused by unauthorized brush heads.
• Damage resulting from misuse or abuse.
• Damage caused by neglect.
• Unauthorized modifications.
• Unauthorized repairs.
• Normal wear and tear, including chips, scratches, abrasions, discoloration, and fading.

Using non-genuine replacement brush heads may damage the toothbrush and limit warranty coverage.

Warranty Limitations

Certain implied warranties are limited to the express warranty period where permitted by law.

The warranty also limits liability for specified incidental, special, and consequential damages where such limitations are legally permitted.

Applicable consumer rights may vary by jurisdiction.

Customer Support Information

Philips provides support for product operation, charging issues, warranty service, and replacement accessories.

Manufacturer Information

Philips Oral Healthcare, LLC

22100 Bothell Everett Highway
Bothell, WA 98021
United States

For assistance outside North America, contact the local Philips Consumer Care Center through the official support website.

Frequently Asked Questions

How do I use the Philips Sonicare 9900 Prestige toothbrush?

Attach the Premium All-in-One A3 brush head, wet the bristles, and apply toothpaste. Position the brush at approximately 45 degrees against the teeth and gumline. Press Power On/Off and move the brush gently across the teeth. Follow the BrushPacer signals until the two-minute default brushing cycle finishes.

How do I connect the Sonicare 9900 Prestige to my phone?

Download the Sonicare app, enable Bluetooth on the phone, and pick up the toothbrush to activate its indicator lights. Open the app, follow the pairing instructions, and create an account. The app allows brushing modes, intensity, and feedback settings to be customized.

What does the purple light mean on the Sonicare 9900 Prestige?

A flashing purple brushing feedback light means excessive brushing pressure has been detected. The handle also changes its vibration. Reduce pressure until the warning stops.

How does SenseIQ work on the Sonicare 9900 Prestige?

SenseIQ monitors brushing behavior, including pressure and brushing movements. It provides feedback during brushing and through the Sonicare app. Its features include Pressure Sensor Feedback, Adaptive Intensity, Scrubbing Feedback, and personalized recommendations.

How do I change the brushing intensity on the Sonicare 9900 Prestige?

Press the hidden button in the intensity indicator area on the handle to cycle through Low, Medium, and High. One light indicates Low, two indicate Medium, and three indicate High. The intensity can be changed before, during, or after brushing.

How long does the Philips Sonicare 9900 Prestige take to charge?

A full charge may take up to 16 hours. The battery indicator blinks white while charging. When charging is complete, it illuminates white for 30 seconds and then switches off.

Why does the Sonicare 9900 Prestige automatically lower its intensity?

Adaptive Intensity lowers the brushing intensity by one level when excessive pressure continues for an extended period. The toothbrush returns to the previously selected intensity at the beginning of the next brushing cycle.

How do I clean the Philips Sonicare 9900 Prestige?

Remove the brush head and rinse it thoroughly with warm water. Rinse the handle, including the brush head connection, and gently clean around the rubber seal at least once per week. Unplug the charger and travel case before wiping them with a damp cloth. Do not use a dishwasher, vinegar, bleach, alcohol, or essential oils for cleaning.