Black Casio G-Shock GA-100RGB-1AER Watch with Colorful Dial The black Casio G-Shock watch has a striking 51 mm wide case made of durable resin. The watch strap is also black resin. The size of the watch and the color scheme of the dial make this watch showy and eye-catching. The stylish Casio G-Shock watch is shock- and magnet-resistant and diving-proof. The watch has an automatic LED backlight, world time, timekeeping features, average speed measurement and many other useful features: Auto LED light Shock resistant Magnetic resistant World Time (29 time zones) Stopwatch function (1/1000 s accuracy, up to 100 h) Timer (1/100 s, up to 24 h) 5 daily alarms Snooze feature Speed display Automatic calendar 12/24 hour display Mineral glass Black resin case Black resin strap Battery life 2 years Waterproof: 200m Case size: 55 x 51.2 x 16.9 mm Weight: 72 g Casio is a Japanese manufacturer of electronic devices, which is especially known for its high-quality and durable sports watches. Casio watches have versatile features and are suitable for both extreme sports and active everyday life. Casio watches are also popular among conscripts due to their durability and excellent price-quality ratio. See all Casio products here