Lightweight resin case makes it unsusceptible to cold, heat, and other external influences Resin bracelet for extreme durability and flexibility Pin buckle for bracelet Hard, scratch-resistant mineral glass for superior protection Background illuminator for visibility in low-light situations LED display flasher for alarm, countdown time, and hourly signal Stop function tells elapsed time, split time, and end time up to 24 hours Countdown timer can be set every second and up to 24 hours in advance Multifunctional alarm includes daily alarm, date alarm, monthly alarm, and every day of a specific month Automatic calendar with date, month, and day of the week Time display can be set to 12 or 24-hour format Battery powers the watch for roughly two years Shockproof Water-resistant up to 20 bar The first G-Shock design change came by way of the 5600 in 1987. The model is now encased in shockproof housing for durability and flexibility, as the resin case makes it ideal for everyday wear, and scratch-resistant mineral glass offers added protection from unsightly damage. Also known for its technical specifications, G-Shock has outfitted the 5600 with a background illuminator for visibility in low-light situations, timer and stop function for athletes, multifunctional alarm, and automatic calendar, among other features.