A smart watch is a computerized wristwatch that functions beyond timekeeping, and is often comparable to a PDA, smart phone, or even a tablet.
Smart watch features may include any of the following: a camera, accelerometer, thermometer, altimeter, barometer, compass, chronograph, calculator, cell phone, touch screen, GPS navigation, Map display, graphical display, speaker, scheduler, watch, SDcards that are recognized as a mass storage device by a computer, etc. and rechargeable battery, and it may communicate with a wireless headset, heads-up display, insulin pump, microphone, modem, or other devices.
Historical perspective: In 2013, The Week reported that Samsung unveiled its new Galaxy Gear, which puts “a huge 1.63-inch” display, framed in metal, on the user’s wrist. Samsung has even built a camera into the device’s rubber strap. But don’t toss out your smart phone just yet. The Galaxy Gear is more like “a companion for your phone,” linking to a handset in your pocket or bag using a special app and Bluetooth technology. “Once you’ve found a compatible phone and connected it up, you’ll be able to place and answer calls, take voice memos, and get all of your phone’s notifications up on the screen.”