inputs.text: replaced plantonics bluetooth ear piece - bought iphone 4 use office go radio shack buy 35mm male 25mm fehemale adapter 399 use unit not convenient bluetooth ear piece cord always attached whole lot cheaper situation fine not leave desk much detach cord use handheld necessary also use car couple times worked fine placed phone one cup holders put headset cord plenty length comfortably fit without tugging pulling controls really not work maybe iphone still ok volume control mic dial rotate not make much difference volume everyone speak says hear fine volume control headset works little bit not much difference turned volume headset full volume tap volume control phone necessary somewhat hearing problehem still hear people headset fine mute button headset not work hooking unit wthe adapter iphone 4 works fine controls adjust inferior not seehem work little gave 4 star