Portable for daily and travel use. Suitable for adults and children<br />IPX7 grade systemic waterproof、 safe and convenient to use<br />Extra soft bristles、 no harm to your teeth<br />Uses ultrasonic waves shaking technology to clean teeth more effective and thoroughly<br />Over 23000 times/minute high vibrational frequency<br />Cleans the slits between the teeth deeply and reduces germs and bacteria<br />Set includes 3 pcs brush heads in total<br />One key switch、 easy to operate<br />Anti-slip handle provides comfortable grip feeling for better brushing<br />Powered by 1 pcs AAA battery、 provides up to about 90 days continuous work time<br /><br />Specification:<br />Material: ABS + electronic components + soft bristles<br />Length: 162mm<br />Brush Head Length: 20mm<br />Work Time: continuous 90 days(max.)<br />Brush Service Time: 2 years(max.)<br />Frequency: >23000 times/minute<br />Powered by 1 pcs AAA battery(NOT included)<br />Available Colors: pink、 blue<br /><br />Package:<br />1 x Handle<br />3 x Brush Heads