Round shock-resistant watch with auto led light, world time, 4 daily alarms, and stop watch | also features speed indicator, countdown timer, and 12/24 hr formats | 55 mm stainless steel case with mineral dial window | quartz movement with analog-digital display | resin band with buckle closure | water resistant to 200 m (660 ft): in general, suitable for professional marine activity and serious surface water sports, but not scuba diving | matte band and case. Shock resistant. Water resistant up to 200 meters. Magnetic resistant. Hourly time signal. Employs a reverse lcd display. 4 daily alarms and 1 snooze alarm. Countdown timer. Backlight auto led light with afterglow. Auto-calendar pre-programmed until the year 2099. 12/24 hour formats. Accuracy +/- 15 seconds per month. World time 29 zones (48 cities + utc). Stopwatch 1/1000 second: measuring capacity: 99:59'59.999' measuring modes: elapsed time, lap time, split time others: speed (0-1998 units/hour), selection distance input (0.0-99.9) module 5081. Battery cr1220 with approximately 2 years of battery life.