Features: - A variety of modes, massage, cleaning, whitening heart to choose the way you need. - The most comfortable vibration amplitude, after many scientific experiments, give you the best brushing experience. - IPX7 waterproof and security material, ergonomic handle. - Long standby time, charging 5 hours, the use of 60 minutes. - Efficient charging, using wireless charging, easy to carry with one key control. - Humanized work timing, working time 2 minutes, every 0.3 seconds pause 0.3S, half-way stop or re-start time re-count. Description: Item Type: KCASA Electric Toothbrush Working voltage: DC 3V Charging time: ? 5 hours Use time: 60 minutes Speed: 21000 ± 2000r / min Motor operating frequency: 260HZ ± 5 Motor diameter: 6mm Motor length: 12mm Operating temperature range: 0 ? ~ 40 ? Storage temperature range: -20 ? ~ 60 ? Output shaft vibration amplitude: left and right swing each 5 ° Brush head swing amplitude: the maximum swing about 3.5MM The main body weight: 67.5g Charging seat net weight: 63g Instruction: 1. The first charge should be full 16 hours. Charging time in winter will be extended by one or two hours. 2. In normal circumstances, please do not open the bottom of the toothbrush card bit. Package Included: 2 x Toothbrush heads 1 x Charging base (With line) 1 x Toothbrush Handle