Function: 9 Frequency Vibration Color: Black Size: 14.4 * 4 cm/5.7" * 1.6" Net Weight: 86 g/0.19 lb/3.0 oz Power: Lithium battery/3.7V/420 mAh Material: ABS + Silicone Package: Color Box Further: IPX7 Waterproof,USB Magnetic Charging Package Size: 20x 7.15x 4.65cm