Model: Crystal White Patent sonic vibration technology for powerful and less noisy cleaning by high frequency micro motions combined with water pressure and pulsations. Remove up to 100% more plaques and stains in 1 week, improve gum and oral health in 2 weeks, compared with a regular manual toothbrush. White/Clean/Sensitive/Polish/Massage 5 Modes optional and real time adjustable. A full charge takes just around 4 hours for over 30 days use. (2 minutes each brush and twice a day.) 3 replaceable toothbrush heads included. Tooth-waved bristles made with Dupont nylon, to suit teeth topography for thorough cleaning of gums and hard to reach areas. Rounded bristle top for safety and gentleness. USB inductive charging, safe and easy, auto shut off after charging is completed, to avoid overcharging for longer battery life, convenient to use at home or travel. 2 minutes smart timer with interval pause reminding each 30 seconds. Waterproof electric toothbrush rated IPX5. Low battery reminding. Anti-slip handle. Protective bristle cover. Package includes 1* Crystal White Sonic Toothbrush Handle 3* Replaceable Electric Toothbrush Heads 1* Protective Bristle Cover 1* USB Cable without Adapter 1* Instruction Manual 1 year quality warranty Tips Attach the bristle with toothpaste on the teeth before turning on the brush to avoid splashing paste. Gently move the brush across the teeth without pressure. The best cleaning performance is achieved when you can clearly feel the micro brush movements on your teeth. When the charge is going to finish, you may feel noticeable weaker motion and just recharge to get regular power. Dentists suggest 2 minutes toothbrush time and replace toothbrush head at least every 3 months.