1. 50° scientific and comfortable sweeping and vibration swing arm, more suitable for Chinese people's use;
2. Self-developed servo sweeping and vibration system with precise output, more comfortable experience;
3. 42,000 times/minute suitable vibration frequency, high cleaning and strong gum protection;
4. High-density and soft bristles, clean teeth and protect gums, 99% antibacterial bristles to prevent bacterial growth;
5. Soft rubber wrapping, shock-absorbing design, no teeth hitting and more comfortable;