Perfectly weighted, premium Silicone Kegel exerciser with easy retrieval cord features intense incremental speed control, instant on /off button and travel lock feature. After a complete charge in 2.5 hours, the device will run on highest speed for 40 minutes, and on lowest speed for 1.75 hours. Measures 3.5 in. by 1.25 in. USB rechargeable, with charging cord included.