Casio G-Shock Watch GD-100-1B - BlackA model equipped with a high brightness LED backlight from G SHOCK, which continues to evolve in the pursuit of toughness. Use of a high brightness LED system and a light guide plate makes the watch easy to read even in the dark. It also has practical functions such as world time, an alarm, and a stopwatch. The colour is classic G SHOCK black. Case size (L W H): 55 51. 2 17. 4 mm Weight: 72 g Case and bezel material: Resin Band: Resin Band