Panasonic Smart electric tooth brush Adult toothbrush IPX7 USB Rechargetable 电动牙刷 Waterproof Ultrasonic Automatic 5 Mode 45000/ Minute tooth brush electric Panasonic Smart electric tooth brush Adult toothbrush IPX7 USB Rechargetable 电动牙刷 Waterproof Ultrasonic Automatic 5 Mode 45000/ Minute tooth brush electric