Function: 10 Frequency VibrationColor: BlackSize: 13.7 * 3.7 cm/5.3  * 1.4 inchInsert Length: 13 cm/4.7 inchMax Dia: 8.5 cm/3.3 inchPower: Lithium batteryMaterial: ABS + SiliconePackage: Color BoxFurther: Waterproof/Inflatable/Wireless