Proper Care• Do not expose earphones to extreme temperatures.• Avoid dropping or strong impact. Extreme shock can damage the earphones.• Always leave an ear tip on the earphone for shock protection.• Perspiration entering the nozzle may cause the earphone to temporarily stopworking. Normal operation usually resumes after the earphone dries out.• Do not pull on the cord to remove it from the jack or the ear.• Clean or replace the ear tips prior to use and following by others.• Replace disposable foam ear tips regularly.• Earwax buildup can reduce the earphone output. When the filters become clogged, they should be replaced. See Changing Filters.CautionConsult a physician or audiologist if you have excessive cerumen, difficulty inserting the ear tips, or discomfort after prolonged use. Itis unsafe to use insert earphones while driving a motorized vehicle, operating machinery, bicycling or jogging, because you may not bealerted to potential danger. Do not use the earphones at excessively loud levels. Noise-induced hearing loss is a result of exposure time, theaverage sound level and the peak of very loud sounds. Decreased listening levels allow for longer periods of safe listening time.Changing Filters1. Remove eartip. 2. Firmly push the sharp tip of the filtertool into the center of the filter.Filter Replacement1. With your fingers, put the nar-row end of a new filter into theend of the earphone. Be carefulto put the open end in first sothat the filter can be seen atthe tip of the earphone. Gentlypush on the filter and snap itinto the earphone. You shouldfeel and hear it snap in place.2. Add the eartip back ontothe earphone.3. Pull out the entire filter andplastic ring.