100% waterproof, totally self contained power stroker. Vibrating pleasure stroker with textured chamber for added sensations. Removable sleeve for easy cleaning. 30 incredible functions of vibration, pulsation and escalation. Memory chip resumes on last function used. Easy push button control. Optional multi-position hands-free suction cup swivel mount included. Materials: Thermoplastic Rubber TPR sleeve, Silicone button, decoration, ABS plastic with polyurethane PU Cote case. 4 AA batteries required, not included. Dimensions 4.75 inches by 2.25 inches sleeve, 9.25 inches by 3.5 inches overal).