Now there is a cost-effective way for Huntera to test the benefits of hearing amplification in the field. The UlTR Ear has an adjustment system that allows you to modify the tone and volume for optimum hearing. Can be worn on either ear. Comes with three batteries, three sizes of ear tips and a cleaning brush. Note: This unit amplifies all ambient sounds; NOT recommended for use where loud noises may be encountered. Only protection is the eartip inside the ear.