Rechargeable silicone Jack Rabbit has advanced power boost button for instant maximum rotation. Features flickering bunny ears with 10 intense functions of vibration, pulsation and escalation, and 3 speeds of independent reversible rotation.USB rechargeable, with charging cord included. Complete charge in 2.5 hours. Rabbit runs on highest speed for 1 hour and on lowest speed for 1.5 hours. Shaft measures 4.75 in. by 1.25 in.