GM-2100M-1ADR This G-SHOCK G-STEEL 2100 Series model features a black bio-based resin band with a resin and stainless steel case and a textured silver-tone stainless steel bezel, paired with a black analog-digital dial accented by subtle red detailing for a modern industrial look. Built with shock-resistant construction, mineral glass, Neobrite, and 200-meter water resistance, it combines dependable G-SHOCK durability with a slim 11.8 mm metal-covered design. Confirmed functions include world time across 31 time zones, a 1/100-second stopwatch, 24-hour countdown timer, five daily alarms, hand shift feature, full auto-calendar, and double Super Illuminator LED lighting, making it a practical everyday watch with refined black-and-silver styling.