seago s1 sonic smart electric toothbrush 3 brush modes whitening usb rechargeable ipx7 waterproof with 3 replaceable brush heads - black

multi-charge and diamond water chestnut design, usb inductive charging, safe and durable 25-day charge can be used, easy to hold. body handle with a matte grip, with non-slip waterproof features. intelligent timing reminder function and automatic memory function, training scientific brushing way. dupont bristles and plastic coated brush head, moderate softness, curved design can be better close to the tooth surface, but also to clean the tongue, replace the brush head. ng.