Detail TEN Functions! Wireless remote control unit. Waterproof! Super-sleek, super-smooth! Requires: LR1. 1.5V x 2 batteries for egg, 23A 12V battery for controller (included one set) Effect Directions for use Requires LR1. 1.5V x 2 batteries for egg, 23A 12V battery for controller (included one set) Notice To avoid injury or aggravation of pre-existing conditions, this device should not be used on swollen or inflamed areas or skin lacerations. No medical claims are warranted or implied by the use of this product. Material: ABS