Model: Casio Watch - Casio Atomic Waveceptor WVA430DJ-1A Case dimension: 43mm in diameter, 14mm in thickness Features: Multi-band atomic timekeeping (US, Japan); Auto receive function (up to 6 times per day); Manual receive function; Signal: US WWVB, Japan JJY40/JJY60; Frequency: US60kHz, Japan 40/60kHz Tough solar power 2 languages: English and Japanese 100M water resistant LED light with afterglow World time: 29 time zones, 30 cities, city code display, daylight saving time on/off 3 daily alarms 1/100 second stopwatch; Measuring capacity: 00'00.00" - 00'59.99" (for the first 60 seconds), 1'00" - 99'59" (after 60 seconds), 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) Power saving function Battery power indicator Approximate battery life: 5 months on full charge (without further exposure to light) Stainless steel bracelet Items included: Casio watch owner's manual and warranty paper