Be sure to carefully read and understand the operating instructions as well before using your hearing instrument. The featured instrument might vary slightly in appearance from your instrument. Component Descriptions Ear hook Tube Eartip holder (fists sssr- Volume control Main unit Battery compartment with ON/OFF switch Side Front See Page 20 of the Operating Instructions. Inserting/Removing Zinc Air Battery 1 7 Replace the battery by opening or closing the battery door, See Paq