A clip-on wireless device for use with a mobile communications device by an operator wearing an article of upper-body clothing. The device includes a body having a housing and a clip connected to the housing. The body is light-weight so as to permit the body to the carried on the article of clothing by the clip. An integrated circuit is carried within the housing and includes radio communications circuitry for communicating with the mobile communications device. An earpiece is included and a cable connects the earpiece to the circuitry within the body. A spring and reel mechanism inside the housing retracts the cable into the housing when the earpiece is not in use.