Cellular headphones; Headphones; Wireless headphones; Personal headphones; Wireless speakers; Portable stereo systems; Personal stereo systems; Earphones; Radio frequency receivers; MP3 players; Electronic monitoring devices incorporating microprocessors, digital displays, electronic sensors, and accelerometers, for detecting, storing, reporting, monitoring, and tracking physical activity, sports activity, fitness training, namely, lap-counting devices and pedometers used during sporting activities that communicate such activity with personal computers and/or mobile devices regarding time, pace, speed and recommended activities and goals; Multifunctional electronic devices for displaying, measuring, and uploading to the Internet information including time, date, body and heart rates, global positioning, direction, distance, altitude, speed, steps taken, calories burned, navigational information, weather information, the temperature, wind speed, and the declination of body and heart rates, altitude and speed; Electronic monitoring devices incorporating microprocessors; Electronic monitoring devices incorporating microprocessors, digital display, and accelerometers, for detecting, storing, reporting, monitoring, uploading and downloading sport, fitness training, and activity data to the Internet; Wearable digital electronic devices in the form of a wristwatch, wrist band or bangle capable of providing access to the Internet and for sending and receiving phone calls, electronic mails and messages; Chargers for use with headphones and speakers