Colt vibrating bullet with multiple speeds. You will enjoy its 4 functions of vibration, pulsation and climbing. Waterproof, so you can use it in the shower or spa. And easy to use with your remote control. (It is attached to the bullet with cable). Made of body safe ABS material. It works with 2 AA batteries, not included. Measurements: 5.75 cm x 2.5 cm