The Optimum Power® Rechargeable Grip-N-Stroke is a fully self-contained vibration power stroker packed with 30 functions of vibration, 2 removable sleeves and pressure sensitive squeeze pads for a completely customizable stroking experience. Pressure sensitive squeeze pads customize tightness with every stroke, while 30 functions of vibration tight and tease you towards new climactic heights.Embrace fully customizable pleasure while you flicker through 30 functions of vibration with every touch of the silicone buttons. The state of the art memory chip allows you to pick up on the last function used, giving you exactly what you're craving every time. Use the 2 removable ribbed sleeves with the stroker for ultra-tight stimulation or use independently for an explosive stroking experience. Each sleeve is made from PureSkin® Thermoplastic Rubber, a super-soft, ultra stretchy material with a unique, life-like feel delivering pure satisfaction in every stroke. The removable open-ended chamber sleeves are easy-to-use, easy-to-clean and require no special care. Look forward to up to 2 hours of high-intensity vibrating stroking pleasure and recharge time of only 2 hours.