Description : Borui BR-Z1 USB Wireless Ultrasonic Electric Toothbrush Oral Hygiene Rechargeable Sonic Automatic Tooth Brush Powerful cleaning as just get off dentist's chair with 3,1000 micro-brush per minute. Remove up to 100% more plaques and stains, compared with a regular manual toothbrush. Enjoy clean and healthy teeth in 7 days and improve gum and oral health in 14 days. 2 minutes smart timer with interval pause reminding each 30 seconds to encourage dentist-recommended brushing habit. Waterproof to be used at bath and shower. 3 Different brushing Modes : 1.CLEAN MODE(DAILY USE) 31000 times/min ultra-high frequency vibration, quickly clean the impurities of the mouth. 2.SOFT MODE Effective cleaning at the same time play a nursing role for the gum-sensitive users. 3.WHITE MODE 28,000times/min to 31,000times/min ultra-high frequency vibration, which have a direct effect for the depth cleaning users. Specification : Brand Borui Model BR-Z1 USB Wireless Ultrasonic Electric Toothbrush Motor Speed 14000 rpm Vibration Frequency 31000 times/min Waterproof IPX7 Toothbrush Head Material 4 DuPont Nylon Toothbrush Heads Power Supply USB wireless inductive charging Input Voltage 5V Fuction 3 Modes (Clean Mode / Soft Mode / Whitening Mode) Package Includes : 1 x Borui BR-Z1 Sonic electric toothbrush handle 4 x Toothbrush heads 1 x Wireless USB Inductive Charger Details Pictures : WARM TIPS : Charging time: 4-6 hours When charging please keep the electric toothbrush in the boot state, the power of the USB charging head also need turning on. When charging the red light will shining, When charging full the red line will long bright. Replace toothbrush heads every 3 months for optimal results.