Thank you for viewing. This is an OMRON waterproof electric toothbrush boasting high plaque removal power with 20,000 vibrations per minute. It performs high-speed sonic vibrations of approximately 20,000 times per minute with two AA batteries. The bristles move in an elliptical motion due to three-dimensional vibrations that combine vertical and horizontal movements. The bristles reach not only the surface of the teeth but also the gaps and irregularities, effectively removing plaque. With two AA batteries, it achieves approximately 5 times the plaque removal power of manual brushing. This is a brand new, unopened item. Only one item is in stock. 【Product Specifications】 - Brand: OMRON - Model Name: HT-B216-G (Green) - Battery Type: 2 x AA batteries included (Approximately 2.5 months of use) - Vibration Frequency: 20,000 times/minute - Waterproof Performance: Washable - Temperature Range: -5 to +35°C - Operating Environment: -20 to +60°C, 0-95%RH Delivery will be via standard mail. Thank you.