Global positioning system (GPS); Global positioning system (GPS) consisting of computers, computer software, transmitters, receivers, and network interface devices; GPS navigation device; GPS tracking device to be worn on the wrist of an athlete during endurance events; GPS tracking devices; Satellite navigational system, namely, a global positioning system (GPS); Wearable computer peripherals; Wearable computers; Wearable digital electronic devices comprised primarily of software for navigat...