... :0-270sec 2,press it to listen to sound 3,OEM or ODM 4,gift ,personal using etc music keychain1,recording time:0 ... -270sec2,press it to listen to sound3,OEM or ODM 4,gift ... ,3c,4c).8,When you press the button to play the music or message .9,Music keychain is used for gift,personal using ...