Maximize every stroke with the Optimum PowerB. Masturwand Vibrating Stroker. This one-of-a-kind open sleeve design and intense vibration functions allow for maximum stroking action. The unique flexible head with sensual ridges puts out 7 functions of rumbling vibrations for mind-blowing sensations. An easy-grip handle and easy push-button control makes it easy to take pleasure into your own hands. To turn on/off, simply hold the single button control for 3 seconds. Look forward to over 2 hours of low speed pleasure and 1.5 hours of high-speed sensations, with a complete charge time of 2.5 hours.