Brand: Walker's Game Ear. MPN: UE1001. Listen up with the Ultra Ear Hearing Enhancer. The single enhancer fits behind the ear and increases hearing. The lightweight device has an on/off switch, dB limiting, and a mild compression circuit. The enhancer works in either ear, and the power source is a LR-44 battery. The package includes the unit, sound tube, S/M/L tulip tips, 3 batteries, and 2 maintenance tools.