Function: 7 Frequency Vibration Color: Black Size: 10.4 * 3.1 cm/4.1" * 1.2" Net Weight: 82 g/0.18 lb/2.9 oz Power: AAA Material: ABS + Silicone Package: Color Box Further: IPX7 Waterproof, USB Magnetic Charging Package Size: 12.5 x 7 x 3.9 cm