Function: 10 Frequency Vibration & Rotation Color: Black Size: 18 * 7.9 cm/9.4  * 1.37 inch Net Weight: 450 g/0.99 lb/15.8 oz Power: Lithium battery/330 mAh Material: ABS + TPE Package: Color Box Further: Waterproof/Rotation/APP Smart Package Size: 18.6*8.3*8.3 CM