Premium Silicone Massager with flexible neck. 10 powerful functions of vibration, pulsation and escalation. Resonating stimulation wiith intense rumbling head. Easy push button control: hold for 3 seconds to turn on/off. Waterproof vibrating body massager. Materials Silicone massager head. Vibrating massage wand requires 2 AAA batteries required, not included. Dimensions 6.5 inches by 1.5 inches body wand, 1.75 inches by 1.5 inches head.