Smartwatches is the term given to new wearable devices that function not only as a standard watch, but also as an extension of your phone — or in some case as a phone themselves. Smartwatches typically offer features such as notifications from your phone for email, SMS and social services, caller ID for phone calls, calendar reminders, alarms and much more. These devices often have hardware that includes an accelerometer, gyroscope, calculator, compass, GPS as well as buttons or touchscreen navigation. Smartwatches run on any number of varying operating systems, from Java-based to full Android devices.
Watches like the Casio data bank series or Fossil Wrist PDA are often remembered as the first smartwatches. Over the last few years, these devices have grown into much more robust devices like the Pebble, Sony Smartwatch 2, Qualcomm Toq, Samsung Galaxy Gear and others. These new watches connected to a phone over Bluetooth to share information. Some devices like the Omate Truesmart and Neptune Pine, actually function as standalone devices with their own SIM card slot and radios.
The newest additions to the smartwatch category include the new Gear 2, Gear 2 Neo and Gear Fit from Samsung. Google has released their smartwatch platform, Android Wear, which is a base-OS for wearable devices like the Moto 360, LG G Watch and Samsung Gear Live.