Function: 9 Frequency Vibration Color: Black Size: 15.4 * 4.8 cm/6.0" * 1.8" Net Weight: 44.8 g/0.09 lb/1.5 oz Power: Lithium battery/3.7V/80mAh Material: Silicone Package: Color Box Further: Waterproof Package Size: 20x 7.15x 4.65 CM