Casio GA400GB-1A G-Shock men's alarm dive watch features a 52mm wide and 18mm thick black resin case with a fixed bezel and textured push-pull crown with function pushers. Casio GA400GB-1A is powered by quartz movement. This stylish watch features a sharp looking digital silver analogue and black digital dial with digital Arabic numerals along with the 12/24-hour time, day-date and month display functions. This attractive watch also features shock resistant, magnetic resistant, LED light (super illuminator), selectable illumination duration (1.5 seconds or 3 seconds), afterglow, World time: 31 time zones (48 cities + coordinated universal time), one touch UTC time zone, daylight saving on/off, 1/100-second stopwatch, measuring capacity: 23:59'59.99", measuring modes: elapsed time, split time, countdown timer, measuring unit: 1 second, input range: 1 minute to 60 minutes (1-minute increments), 5 daily alarms (with 1 snooze alarm), hourly time signal, low battery warning (a warning appears on the display whenever battery power drops below a certain level.), full auto-calendar (to year 2099), 12/24-hour format, accuracy: ?? 15 seconds per month, button operation tone on/off, approximately battery life: 3 years, scratch resistant mineral crystal and water resistant to 200 meters. Casio GA400GB-1A is equipped with a 24mm wide black resin strap with a buckle clasp. Casio GA400GB-1A men's G-Shock black and silver tone dial black resin strap world time dive watch is brand new and comes in an original Casio gift box and is backed by a 1 year store limited warranty.