Many people associate sonic technology with Philips. This is the leading producer of the best-performing electric toothbrushes in the U.S. Philips Sonicare product series has many toothbrushes that you can pick. Among the latest and the most preferred option is HX6921/02 Flexcare Plus electric toothbrush, with a rechargeable battery. If you are looking to purchase an electric toothbrush for the first time, or want to update your old one, try the HX6921/02 electronic toothbrush from Philips.

Overall Specification

Product dimension0.5 x 1 x 7 inches
Weight1.4 Pounds
Brushing movements31,000 stroke
Brushing technologySonic technology
Brushing modes5
Handle colorWhite w/ metallic front panel
Head includes1
Bristle MaterialNylon
BatteryLithium ION
Battery lifeUp to 3 weeks
DisplayIlluminated display
Voltage110-220 V
Warranty2 Year
Price Check price

Our Impression

Philips Sonicare Flexicare Plus is a nice toothbrush to add to your bathroom vanity. It comes with a charger that is too small for its holder. So it leaves enough room to keep two brush heads and to hold and charge your toothbrush in a vertical position. This is the most exceptional feature I have seen on this toothbrush.

Flexicare Plus blends its patented technology with five brushing modes to clean your teeth and gums. With this item your frequent journeys to the dentist’s office will reduce, and you will start to save money on dental issues.

Features to expect:

LogoGum care mode- This is a unique feature on HX6921/02 electric toothbrush. Gum Care mode is designed to access and remove hidden plaque in order to set pace for the healing process of your gums. The gum care mode offers two minutes of overall cleansing and a minute to attend to problematic areas along your gumline.  Ever since I started to use this toothbrush I have noted that my gums are no longer bleeding.  And the secret has been the Gum care mode, which helps to stop the inflammation, bleeding and gingivitis in just two weeks.

LogoFive control settings- This is why I find my Flexicare Plus teeth cleanser so versatile, useful and fun to use. You can choose among clean, massage, sensitive, refresh and gumcare. I just need to press a button on the brush handle to activate the setting I want. Then the brush jumps into action. This eliminates the need to use separate gadgets to massage, clean, protect gums, and so on.

LogoPatented sonic technology- This appears in every Philips electronic toothbrush. This specific product boasts high vibrating speeds of 31000 strokes per minute. This speed is enough to clean your gums without bruising them, and to remove plaque between your teeth.

LogoProResults standard contoured brush head- This is the component that does the main work of removing plaque along your gumline. It is claimed to remove two times more plaque that your ordinary toothbrush.

LogoIntergrated timers- Did you know that your mouth has four quadrants? This electric toothbrush from Philips Sonicare series provides two timers. The Smarttimer stops when you have already brushed for two minutes (dentist’s recommended teeth cleaning time). The quadpacer stops every thirty seconds to alert you that you are now ready to move to the next quadrant.


LogoTravel case and charger- Philips Sonicare products always come with a travel case for the toothbrush. This one is no exception either, as it offers a hardwearing travel case and a detachable mini-travel charger.

LogoBattery- The type offered is a rechargeable battery, of course, and it is one of the components that made me fall in love with the HX6921/02 Sonicare toothbrush. It has a regular charger for home use and a tinier and convenient charger for your trips. I have never bought a toothbrush with a rechargeable battery this powerful, making Flexicare Plus an excellent pick. The battery stores charge for many days and when charge is almost running out you will be alerted by a battery meter. When carrying the brush with you on a short excursion, you will probably not use your mini-travel charger at all.

Note: Philips Sonicare Flexicare Plus is relatively lightweight and comfortable to hold because of a wrap-around rubber grip.

Tips if you are going to buy this item

If you will purchase this product, just use its settings generously. Do not use just one setting when you have four others to make your teeth and gum cleaning experience comfortable, safe and enjoyable.

Wrap up

Toothbrushes are expensive gadgets yet some of them are useless. Knowing this fully well, I was a little skeptical when I stumbled upon the HX6921/02 Sonicare on Amazon. All in all, I ordered it and started using immediately. I have always been unhappy with the stained color of my teeth, and I am happy to say that they looker whiter and more natural than they did before. Additionally, my Flexicare Plus has healed my gums and now my breath is eternally fresh.

Get Sonicare Flexcare Plus  at Amazon

HX6921/02 Flexcare plus


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  • Uses patented sonic technology that produces strong vibrations that support advanced gum and teeth cleaning
  • It is easy to hold because of the small neck
  • Offers a regular charger and a mini-travel charger.
  • Comes with a travel case that lets you bring your electronic toothbrush anywhere you go.
  • Battery life is longer and more convenient when traveling.
  • The gadget offers two timers that warn you when you are done brushing.


  • Many users think the toothbrush would be excellent if it were provided with two brush heads that are a bit larger and wider.

Bottom line

I adore the design of Philips Sonicare Flexicare Plus and the fact that I can switch from one setting to another as I please.

Philips Sonicare HX6921/02 Flexcare plus Rechargeable electric toothbrush Will Safeguard and Heal Your Gums
Battery life90%
Value for money89%
88%Overall Score

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