US Patent 7953455 Wireless telecommunication device

A wireless telecommunication device including a foreground unit, and a background unit that is physically separated from the foreground unit and in local communication with the foreground unit. The foreground unit is provided to support incoming calls independently of the background unit. Furthermore, the foreground unit and the background unit cooperate to support outgoing calls. The scope of the invention also includes a method for doing business by offering the foreground unit for sale in a packaging having a form factor selected from the group consisting of: a pen, a pen cap, a wristwatch, and a necklace.