Optimum Power Ultimate Power Stroker is a self contained, easy to store masturbator with snap on storage lid. Intense stroking plus independent vibrating action. 7 functions of intense vibration, pulsation and escalation. 4 rows of extreme stroking beads with 3 speeds of independent stroking action. Removable, textured, super stretchy sleeve for easy cleaning. Easy to use push button controls. Easy grip handle. Safe and pure for body and pleasure made using phthalate free materials ABS plastic stroker, Thermoplastic Rubber TPR sleeve. 5 inches by 3.5 inches sleeve. 8.5 inches by 3.5 inches overall. Penis pump requires 4 AA batteries, not included. 21.3 ounces bulk weight.