Go sleek, sharp and bold with the new black band and silver stainless steel bezel GM2100-1A in a metal-clad octagonal take on the original iconic design. Forged in stainless steel with rounded hairline finish, the strong bezel says super style all the way. The dial is treated with vapor deposition finish for a detailed metallic look that suits a classic metal G-SHOCK timepiece. Incremental variations in the detailed square dot texturing on the wristband take casual urethane materials up a notch Shock Resistant 200-meter water resistance LED light for the face (Super illuminator, selectable illumination duration (1.5 seconds or 3 seconds), afterglow) LED backlight for the digital display (Super illuminator, selectable illumination duration (1.5 seconds or 3 seconds), afterglow) Accuracy: ±15 seconds per month Approx. battery life: 3 years on SR726W × 2 Size of case : 49.3×44.4×11.8mm Total weight : 72g