Remote control vibrating glans penis massager that can be used hands-free or stroking. It includes an optional band to increase the intensity and tightness. For details, please find the specification below. Materials Body-Safe Silicone/ABS Plastic Weight 133g Battery Li-Ion Rechargeable Usage Times Level 1 - 115 Minutes Level 2 - 85 Minutes Level 3 - 60 Minutes Charging 65 Minutes Standby up to 120 Hours Waterproof IPX7 Waterproof