[Dual Action Brushes] Combines high-frequency vibrations up to 66,000 times per minute with an ultra-wide oscillating movement of 60°. [CONSTANT CLEANING PERFORMANCE] Laifen's rugged servo system delivers three times the cleaning performance of conventional electric toothbrushes. [Clean, sleek design] Making the handle more hygienic. Its design is crucial for the IPX7 rating, allowing for ...