Ergonomically curved, body-forming premium Silicone massager features triple motors with 5 functions of vibration, pulsation and escalation plus alternating patterns. Includes instant on/off button. After a complete charge in 2.5 hours, the device will run on highest speed for 45 minutes, and on lowest speed for 1.75 hours. USB rechargeable, with charging cord included. Shaft measures 4.5 in. by 1.5 in.