Function: 9 Frequency Vibration Color: Claret/Purple One Ball Size: 12.5 * 3.3 cm/4.9" * 1.2" Two Ball Size: 17 * 3.3 cm/6.6" * 1.2" Net Weight: 74.3 g/0.1 lb/2.6 oz Power: Lithium battery/3.7V/50mAh Material: ABS + Silicone Package: Color Box Further:...