The master-bot is a super powered masturbator that does the hard work for you!enjoy Ultimate masturbation sessions with the push of a button, or add to the experience with your own stroking action. within the hollow chamber is a soft tpr sleeve that wraps around your rod and heightens the experience with rows of strategically placed ticklers that will massage your rod as you stroke.with the simple two speed controller switch, and the exhilarating textured interior, you are assured an explosive finish with the height of stroker technology. simply lube up, slide in, and let master-bot do all the work!measurements: 9.75 inches in length, 4.5 inches insertable, 2 inches in diametermaterial: abs plastic, tprcolor: blacknote: requires (4) aa batteries, not included