Featuring 7 functions of intense vibration, pulsation and escalation, this stretchy and comfortable silicone enhancer has a removable vibrating massager. USB rechargeable, with charging cord included, it completely charges in 70 minutes. Enhancer will run on highest speed for 2 hours and on lowest speed for 3 hours. Ring diameter is 1.5 in. Dimensions of ring are 3.5 in. by 2.25 in.