Function: 2 Speeds 9 Frequency Vibration Color: Black Size: 12.9 * 3.5 cm/5.8" * 1.6" Net Weight: 115 g/0.25 lb/4.05 oz Power: Lithium battery Material: ABS + Silicone Package: Color Box Further: IPX7 Waterproof, USB Magnetic Charging Package Size: 17x11.65x5.15cm