Casio Tough-Solar G2310R-1V Wristwatch
Innovative technology combines with modern styling to bring you the Casio Men's G-Shock Tough Solar Power Watch. With helpful text lining the black resin bezel, it's easy to program handy functions like the stopwatch, countdown timer, five alarms, World Time with 31 time zones, and 12- and 24-hour formats. You'll love the convenient and solar-powered battery, which can operate for up to 11 months on a full charge. A bright EL backlight automatically turns on with the movement of your wrist, and the round, black dial features clearly divided sub-dials with a wealth of information, including a day, date, and month display. With reliable shock resistant technology, a water resistant depth of 660 feet (200 meters), and a durable black resin strap, this cutting-edge timepiece is perfect for the adventurous man.

Casio
With the launch of its first watch in November 1974, Casio entered the wristwatch market at a time when the watch industry had just discovered digital technology. As a company with cutting-edge electronic technology developed for pocket calculators, Casio entered this field confident that it could develop timepieces that would lead the market.
Today, Casio is focusing its efforts on solar-powered radio-controlled watches: the built-in solar battery eliminates the nuisance of replacing batteries, atomic timekeeping means the users never have to reset the time. Recently, Casio launched a series of Bluetooth watches that sync to the users cell phone to automatically update the time. Casio is always moving time forward.