Cockring prostate massager details:
 Brand: Yunman
 Remote control
 Function: 10 frequency vibration
 Special function: Moving spikes stimulate prostate
 Rechargeable, USB charging port
 Color: black
 Material: silicone
 Size: 3.2x12.8cm
 Cockring: inner diameter 3.9cm, good elasticity
 Weight: 104g
 Charging time: 120 minutes
 Usage time: 60 minutes