Casio G-Shock x GM-2100 Series ft. Fine Metallic Series Men Sports Hexagon 200m Water Resistant Watch GM-2100YM-8A GM2100YM GM2100 GM-2100 GM-2100YM Experience the bold sophistication of G-Steel with its striking monochromatic silver design. This collection features a sleek metal bezel paired with a newly engineered tough silicone band, both in a stunning silver hue. The band is enhanced with a urethane sheet and vapor deposition for a metallic shine, ensuring comfort and style. Perfect for any occasion, these timepieces are not just functional but also fashionable, including the iconic GM-2100 with its distinctive octagonal bezel. Module / Movement 5611 (quartz) Battery Life / Accuracy Approximately 3 years (+/-15 seconds per month) Crystal Mineral crystal Light Double LED light (super illuminator, selectable illumination duration, afterglow) Case / Band Material Resin / stainless steel case with tough silicone resin band Water Resistance 200m / 20 bar Case Size Thickness: 11.8 mm Diameter: 44.4 mm Length: 49.3 mm Other Specifications Casio G-Shock x GM-2100 Series ft. Fine Metallic Series Shock resistant World time (31 time zones, daylight saving on/off) 1/100-second stopwatch (up to 24 hours, elapsed time, split time) 1-second countdown timer (up to 24 hours) 5 daily alarms Hourly time signal Full auto-calendar (to year 2099) Button operation tone on/off 12/24-hour format Hand shift feature (hands move out of the way to provide an unobstructed view of digital display content) Regular timekeeping (analog-digital display)