Apollo Hydro Power Stroker. 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. Waterproof for play in and out of the water. Safe and pure for body and pleasure made using phthalate Thermoplastic Rubber TPR sleeve, Silicone button, decoration, ABS plastic with polyurethane PU Cote case. Vibrating sex toy requires 4 AA batteries, not included. Bulk weight 16.8 ounces. 4.75 inches by 2.25 inches sleeve. 9.25 inches by 3.5 inches overall.