Black Casio G-Shock Watch GA-2100-1A1ER The Casio G-Shock Perfect Balance Combi watch is a stylish black ensemble made of carbon fiber-reinforced polyurethane and strong mineral glass. The hands and indexes of the watch have luminescence, which makes it easier to read the watch in the dark. The dial also has a digital time display and a separate display for the days of the week. The Casio G-Shock watch is shock resistant and waterproof. The comprehensive features of the watch make it versatile: Led light Afterglow World time function Timer, 1 / 1 min-24 hours Chronograph 1 / 100 sec-24 hrs 5 alarms 12 h / 24 h format Automatic calendar Day of the week display Cursor dodge function Button sounds on / off Special shock-resistant Waterproof: 200 m Case width 42.9 mm Material: carbon fiber reinforced polyurethane Color: black Mineral glass Module: 5611 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 in army due to their durability and excellent price-quality ratio. See all Casio products here