Casio - G Shock - Solar Atomic - GW 6900A-7 - Limited Edition - Multi-Band Atomic Timekeeping (US, UK, Germany, Japan, China) - Receives time calibration radio signals which keep the displayed time accurate - Auto receive function (up to 6 times per day) - Manual receive function - Signal: US WWVB, UK MSF, Germany DCF77, Japan JJY40/JJY60, China BPC - Frequency: US 60kHz, UK 60kHz, Germany 77.5kHz, Japan 40/60kHz, China BPC 68.5kHz - Tough Solar Power - Shock Resistant - 200M Water Resistant - Full Auto EL Backlight with Afterglow - World Time - 31 times zones (48 cities + UTC), city code display, daylight saving on/off - 4 Daily alarms and 1 Snooze Alarm - Hourly time signal - 1/100 second stopwatch - Measuring - capacity: 23:59'59.99" - Measuring mode: Elapsed time, split time, 1st-2nd place times - Countdown Timer - Measuring unit: 1 second - Input range: 1 minute to 24 hours (1-minute incremants and 1-hour increments) - Full auto-calendar (pre-programmed until the year 2099) - 12/24 hour formats - Button operation tone on/off - Accuracy: +/- 15 seconds per month - Storage battery: Solar rechargeable battery - Battery power indicator - Power saving function - Approx. battery life: 10 months on full charge (without further exposure to light) - Module: 3179This new Solar Atomic mode is based on the original DW6900 model, G-Shock's best-selling case design. With this model, a Solar Atomic Timekeeping system was employed without changing the basic design of the watch. This makes it possible to generate power to keep the watch running with extreme accuracy and minimal exposure to normal lighting. This simple design was achieved by eliminating as much coloring and decoration as possible and the result is a model that captures the essence of the basic G-Shock. White Resin Band and a Digital Dial Code.