LG Electronics' smartwatch went on sale on Tuesday in 27 countries.
The G Watch is the company's first smartwatch running on Google's operating system Android Wear. The simple, sleek rectangular watch without buttons weighs 63 g and is 9.95 mm thick.
It has a health check function, and the voice command allows users to use a variety of apps without having to touch the screen.
It can also play music, send texts, check emails and search the web by voice command.