Casio #AQW101B-2AV Men&#39;s Sports Gear Thermometer/Fishing Indicator Watch 200M Water Resistant, EL Backlight with afterglow, Thermometer, Temperature tendency graph, Temperature memory Memory capacity: Up to 50 temperature records, Fishing mode, Moon Data (moon age of input data, moon phase graph) World Time, 30 time zones (50 cities), city code display, daylight saving on/off, 1/100 second stopwatch Countdown timer, Daily alarm, Hourly time signal, Full auto-calendar (pre-programmed until the year 2099),12/24 hour formats Button operation tone on/off, Accuracy: +/-30 seconds per month, Battery: SR927W x 2, Approx. battery life: 2 years, Module: 5056,Size of case / total weight: 49.1 x 46.0 x 14.9mm / 51g