Function: 2 Speeds 9 Frequency Vibration Color: Black Size: 13.4 * 4.5 cm/5.3" * 1.8" Net Weight: 99 g/0.22 lb/3.5 oz Power: Lithium battery Material: ABS + Silicone Package: Color Box Further: IPX7 Waterproof, USB Magnetic Charging Package Size: 17x11.65x5.15cm