Function: Vibration Finger VibratorColor: BlackSize: 4.9 * 1.9 cm/1.9" * 0.7"Net Weight: 17 g/0.04 lb/0.6 ozPower: 3 LR41Material: ABS + SiliconePackage: Color BoxFurther: WaterproofPackage Size: 12.5*6.3*3.7 CM