Thank you for viewing. This is an OMRON waterproof electric toothbrush that vibrates at 20,000 times per minute, removing plaque about 5 times more effectively than manual brushing. It performs high-speed sonic vibrations at 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. 【Product Specifications】 - Brand: OMRON - Model Name: HT-B214-PK - Color: Pink - Battery Type: 2 x AA batteries included (Can be used for approximately 2.5 months) - Vibration Frequency: 20,000 times/minute - Waterproof Function: Washable - Operating Temperature Range: -35℃ to 60℃ Delivery will be via regular mail. Thank you.