The G-SHOCK GBM2100-1A from the G-STEEL 2100 collection is built for men who want toughness with refined style. It features a 49.3 × 44.4 × 11.9 mm case crafted from Bio-based resin / Stainless steel, matched to a Stainless steel and Bio-based resin band. The dial/display is Black, delivering crisp legibility in all conditions. Timekeeping is handled by a Tough Solar, Bluetooth system for dependable accuracy and everyday convenience. Water resistance is rated to 200 m, so it’s ready for swimming and harsh weather. Key features: Slim octagonal profile; World time; Stopwatch; Timer; 5 alarms; Double LED light. As with every G‑SHOCK, you also get the signature shock‑resistant construction and rugged reliability for years of worry‑free wear. G‑SHOCK engineering blends resilient materials with thoughtful ergonomics, from the protective bezel architecture to the comfortable strap. Sapphire or mineral crystals, high‑brightness illumination and intuitive controls make these watches easy to live with day to day. Whether you’re training, traveling or tackling the workweek, this model balances performance, practicality and distinctive design so it feels as capable as it looks. Identified by SKU no. GBM2100-1A.