Black Casio G-Shock GA-2100RGB-1AER Watch with Colorful Dial The black Casio G-Shock watch has a 45 mm wide carbon fiber reinforced resin case and a resin bracelet. The watch belongs to the Virtual Rainbow series, which is inspired by the virtual game world. The dial has a stylish coloring in all the colors of the rainbow. The Casio G-Shock watch is shockproof and waterproof. The watch has an LED backlight, world time, timekeeping features and many other useful features: LED backlight Impact resistant Neo screen, the screen glows in the dark after even a small exposure to light World Time (29 time zones) Timekeeping (1/100 s accuracy, up to 24 h) Timer (1/1 s, up to 24 h) 5 alarms Hands moving function Key sounds on/off Automatic calendar (day, weekday and month) 12/24 hour display Mineral glass Case material: carbon fiber reinforced resin Bracelet material: resin Battery life: 3 years Waterproof: 200m Case size: 48.5mm x 45.4mm x 11.8mm Weight: 51 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