A smartwatch is a computing device that is worn on the wrist like a regular watch. It typically features the functionality and capability that smartphones are known for.
Some smartwatches are designed to be connected to smartphones, while others simply work by themselves and require no additional connectivity. Smartwatches feature access the Internet, phone call capabilities, mobile apps and text messaging. Furthermore, they may include caller ID, stock market quotes, workout monitoring and GPS technology for getting directions and location access. Smartwatches use external and internal sensors to gather data similar to the way other computers do. They also usually support current wireless technology such as Wi-Fi and Bluetooth.
As of 2015, companies with smartwatches presently on the market or with plans to produce them include Apple, Samsung, LG and Sony. The Apple Watch is integrated with the operating system iOS and with other Apple services. It comes in three versions: the Apple Watch Sport, Apple Watch and Apple Watch Edition. The Apple Watch requires connectivity to an iPhone 5 or later to perform many of its functions. With a shipment of 4.2 million smartwatches in the second quarter of 2015, the Apple Watch is the bestselling wearable device ever.