Setup for trueblue/bluetooth, Tb20el

start in the off position press and hold the talk button and you will hear a tone continue to hold for another 7 seconds (10 seconds total) then the light should be flashing blue then red it is now in discovery mode now take the divice you are trying to pair it with and do a search for blue tooth devices. once it is found you may need a password it is 0000 as is the default password for all blue tooth devices hope this helps.