- The bristle head is replaceable. As high frequency vibrating body installed in bristle head part, the bristle head and handle is connected by flexibility rubber, the TB vibration is controlled in bristle head only without feeling vibration in hand, so comfortable .
- Flexible rubber supporting the bristle head, it will rebound automatically when bristle head is overexert to control the strength on teeth automatically.
- Save the power, one piece of AAA battery, use till six months.
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