Function: 10 Frequency Vibration
Color: Black
Inner Dia: 3.6 cm/1.4"
Outer Dia: 7.0 cm/2.8"
Net Weight: 75 g/0.17 lb/2.6 oz
Power: Lithium battery
Material: ABS + Silicone
Package: OPP Bag
Further: Waterproof
Package Size: 13.5*10*6 CM