Casio Calibre 3229 quartz movement. Shock resistant functions and green shock sensor light (illuminates when case is struck). Full calendar with month, date, day display. Chronograph stopwatch function with start/stop and lap timing. Multiple alarms including snooze feature. GMT function for displaying Coordinated Universal Time. Second time zone capability. 100 second countdown timer. Fixed black resin bezel. Black digital dial (LCD backlit by light sensor). Resin case and strap construction in black colour. Square shape measuring approximately 48.9 x 42.8 mm with thickness of about 13.4 mm. Equipped with a buckle clasp closure system. Water resistant up to 200 meters / 660 feet depth. Japanese movement origin (watch label). Part of the G-Shock Series designed for sport and durability.