Ergonomically curved, body-forming premium Silicone massager features dual motors with 10 functions of vibration, pulsation and escalation. Includes instant on/off button. After a complete charge in 2 hours, the device will run on highest speed for 40 minutes, and on lowest speed for 2 hours. USB rechargeable, with charging cord included. Shaft measures 4.5 in. by 1.25 in.