Specifications: Size: 190*30.5*20.5mm Color: Pink, Green Material: Alloy steel + Silicone Features： Integrated handle, easy to grip. Safe IPX6 waterproof, suitable for daily use. High-frequency vibration remover. Physical remove dental calculus. Medical quality material; high quality, easily clean tooth. Clean dental calculus, tartar smoke, tea spot, etc Adjustable 5 frequency level for different needed. Humanized design. One key operation, easy to use.