Countdown timers and alarms to remind a person to take or give medication and/or to remind a person of daily routines, incorporated into a wristband; Electronic text-messaging device for use in conjunction with personal digital assistants; GPS tracking device to be worn on the wrist of an athlete during endurance events; Portable wrist-mounted digital electronic device for audio recording and audio playback; Smart watches; Smartwatch bands; Smartwatch straps; Wearable activity trackers; Weara...