Totally self-contained vibrating power stroker features 30 functions of intense vibration, pulsation and escalation. Removable and replaceable sleeve for easy cleaning or independent use. Includes textured chamber for added sensations and pressure-sensitive squeeze pads to customize tightness. Removable cap for safe and clean storage. 100% waterproof. USB rechargeable (charging cord included). Stroker measures 10 in. by 5 in.