G-Shock GSTS100G-1A G-Series watch by Casio. G-SHOCK, pursuing the true toughness, has revealed a new series of products. Under the concept of Layered Toughness, the G-STEEL series consists of a quality metal body with the Shock Resistant structure that G-SHOCK is known for.Shock resistant. 200M water resistant. Solar powered. Double LED light. LED light for the face (Full Auto LED Light, selectable illumination duration, Afterglow). LED Backlight for the digital display (Full Auto LED light selectable illumination duration, afterglow). World Time. 31 time zones (48 cities + UTC), city code display, daylight saving on/off. 5 Daily Alarms. Hourly time signal. Countdown timer. 12/24 hour formats. Accuracy: +/- 15 seconds per month. Approx. Battery Life: 8 months on a rechargeable battery (operation perio with normal use without exposure to light after charge) 19 months on rechargeable battery (operation when stored in total darkness with the power save function on after full charge). Dimensions: 59.1mm x 52.4mm x 16.1mm. Imported.