Black Casio G-Shock Watch GM-2100-1AER Casio G-Shock Perfect Balance Combi watch is a stylish ensemble made of stainless steel and carbon fiber reinforced polyurethane. The hands and indexes of the watch have luminescence, which makes it easier to read the watch in the dark. The display also has a digital time display and a separate display for the days of the week. The Casio G-Shock watch is shockproof and dive-proof. 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 Dodge function of the pointers Button sounds on / off Special shockproof Dive-proof: 200 m Case width: 44.4 mm Material: carbon fiber reinforced polyurethane and stainless steel 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 value for money.