Apollo Wireless Grip Stroke Masturbator. Uniquely designed open grip masturbator. Ribbed chamber for explosive results. Stretchy easy grip handle. Designed to accommodate any size man. Powerful and removable wireless 2-speed stimulator for added sensations. Waterproof for play in and out of the water. Safe and pure for body and pleasure. Made using phthalate free materials. Thermoplastic Elastomers TPE stroker, ABS plastic with Silver Plating stimulator, ABS plastic cap. 4.5 inches by 2.5 inches stroker. 2.75 inches by .75 inch stimulator. Vibrating stroker requires 1 AAA battery, not included.