Optimum Power Masturball from Cal Exotics. The Optimum Power Masturball is a fully self contained vibration power stroker packed with 10 functions of vibration, 3 functions of sensational compression and pressure sensitive tickler pads for a completely customization stroking experience. Pressure sensitive squeeze pads customize tightness with every stroke, while the variety of functions tickle and tease you towards new climactic heights. Embrace fully customization pleasure while you flicker through 10 functions of vibration with every touch of the silicone buttons. The removable open ended chamber sleeves are easy to use, easy to clean and require no special care. Look forward to up to 1 hour of high intensity vibrating stroking pleasure and recharge time of only 2.5 hours. Specifications: Black. Materials ABS Plastic, Thermoplastic Rubber TPR. Power source USB Rechargeable included. Features Phthalate Free, Waterproof, Rechargeable, Vibrates. 90 days warranty. Maximum run time 65 minutes. Maximum charging time 150 minutes. Measurements 4.5 inches by 2.25 inches Maturball. 2 inches ring diameter. Bulk weight 3.5 ounces. Package 7.1 ounces. Package 5.5 inches by 5.5 inches by 8 inches.