Multi-Band Atomic Timekeeping (US, UK, Germany, Japan) Receives time calibration radio signals which keep the displayed time accurate Auto receive function (6 times per day) Manual receive function Signal: US WWVB, UK MSF, Germany DCF77, Japan JJY40/JJY60 Frequency: US 60kHz, UK 60kHz, Germany 77.5kHz, Japan 40/60kHz Tough Solar Power Shock Resistant 200M Water Resistant LED Light with Afterglow World Time 29 times zones (48 cities), city code display, daylight saving on/off Daily Alarm Countdown Timer Measuring unit: 1 second Countdown range: 1 minute to 60 minutes 1/100 second stopwatch Measuring capacity: 59'59.99" Measuring modes: Elapsed time, split time, 1st-2nd place times Hourly Time Signal Auto Calendar (pre-programmed until the year 2099) 12/24 Hour Formats Accuracy: +/-15 seconds per month (with no signal calibration) Storage Battery: CTL1616 Battery Power Indicator Power Saving Function Approx. battery life: 7 months on full charge (without further exposure to light) Module 4765 Size of case/total weight 52.0 x 46.4 x 14.9mm / 54.3g NEW WITH TAG. NOT IN THE ORIGINAL BOX BUT WILL COME BOXED.