Function: 9 Frequency Vibration Color: Pink/Black Size: 20 * 3.4 cm/7.8  * 1.3 inch Net Weight: 112.6 g/0.24 lb/3.97 oz Power: Lithium battery/3.7V/400mAh Material: ABS + Silicone Package: Color Box Further: Waterproof Package Size: 20 x 7.15 x 4.65 CM