In the field, at the gym, at the office, wherever, this timepiece is destined tobecome a classic. Atomic timekeeping, tough solar power, shock resistance, 660' (200 meter) water resistant and 30-city world time make this a workhorse of a watch. The atomic timekeeper function receives time calibration radio signals automatically four times a day which keep the displayed time accurate, also has a manual receiver function; the signal received is WWVB at a frequency of 60 kHz, watch has full auto EL backlight with afterglow making it one great watch in low light conditions, world time with 29 time zones (30 cities), city code display, and daylight saving on/off function. Four daily alarms and one snooze alarm which is great when you travel and need to get up on time, hourly time signal, time recorder with a memory capacity of 30 records. Each record contains month, day, hours, minutes, and seconds. A 1/100 second stopwatch with a measuring capacity of 23:59'59.99". Stopwatches have measuring modes for elapsed time, split time, and 1st and 2nd place times. Watch is equipped with full auto-calendar (pre-programmed until the year 2039), 12/24 hour formats, and hourly time signal function, and watch is accurate +/- 15 seconds per month (with no signal calibration). The storage battery is a solar rechargeable CTL1616 battery. There is a battery power indicator, a power saving function, and an approximate battery life of a whopping 11 months on a full charge without further exposure to light. Watch comes with a black resin band.