Sonic Brush Electric Toothbrush USB Rechargeable Ultrasonic Presented 4 Toothbrush Heads Brush Sets Whitening Teeth
- sonic technology, 31000 times / min vibration frequency.
- USB charging, can work 30 days on a single charge.
- Three modes: Cleaning mode, Whitening mode, Massage mode.
- Automatic Memory System, toothbrush will change the frequency, automatically to last frequency you use in each departure.
- IPX7 waterproof, 2 minutes timing, pause and change area in every 30s.