Function: 12 Frequency Vibration Color: Yellow + White Size: 19.3 * 3.2 cm/7.5" * 1.2" Net Weight: 157 g/0.34 lb/5.5 oz Power: Lithium battery/3.7V/500 mAh Material: ABS + Silicone Package: Color Box Further: Waterproof Package Size: 23x10x7.5 cm