Casio G-Shock Multiband 6 Tide Graph and Moon phase GW-7900B-1

Casio G-Shock Multiband 6 Tide Graph and Moon phase GW-7900B-1 , All black

From G-SHOCK, the watch that has long been setting the pace for timekeeping toughness, comes a pair of new models that combine tough, high-performance digital timekeeping with radio-controlled accuracy.
Large buttons are designed to allow operation even while wearing thick gloves, even those worn with protective clothing.
Tide Graph and Moon Phase features show tide and moon information for preset areas. Other advanced features include highly shock-resistant construction, a Tough Solar power system, MULTIBAND 6 reception of six time calibration signals around the globe, and much more.

Case: Resin 
Accuracy per month: ±15 sec 
Battery Type: Recharge 
Battery Life: SOLAR 
EL: Blue Green

1/100-second stopwatch 
Measuring capacity: 23:59'59.99"
Measuring modes: Elapsed time, split time, 1st-2nd place times 
12/24-hour format 
   
Accuracy: ±15 seconds per month (with no signal calibration) 
   
Approx. battery operating time 
9 months on Rechargeable Battery (Operating period with normal use without exposure to light after charge)
26 months on Rechargeable Battery (Operating period when stored in total darkness with the Power Save function ON after full charge) 
Full auto-calendar (to year 2099) 
   
Battery power indicator 
   
Button operation tone on/off 
   
Countdown timer 
Measuring unit: 1 second
Input range: 1 minute to 24 hours(1-minute increments and 1-hour increments) 
Daily alarms 
5 independent daily alarms (4 one-time alarms and 1 snooze alarm) 
Electro-luminescent backlight 
Full auto EL light, afterglow 
Hourly time signal 
   
Moon data 
(Moon age of the specifice date, moon phase graph) 
Power Saving 
(Turns off the display when the watch is left in the dark) 
Regular timekeeping 
Hour, minute, second, pm, month, date, day 
Shock resistant (G-SHOCK) 
   
Solar powered 
   
Tide graph 
(Tide level for specific date and time) 
Time Calibration Signals 
Station name:DCF77 (Mainflingen, Germany)
Frequency:77.5 kHz
Station name MSF (Anthorn, England)
Frequency: 60.0 kHz
Station name WWVB (fort Collins, United State)
Frequency: 60.0 kHz
Station name: JJY (Fukushima, Fukuoka/Saga, Japan)
Frequency: 40.0 kHz (Fukushima) / 60.0 kHz (Fukuoka/Saga)
Station name: BPC (Shangqiu City, Henan Province, China)
Frequency: 68.5 kHz 
Time calibration signal reception 
Auto receive up to six* times a day (Remaining auto receives canceled as soon as one is successful)
Manual received
Last time received display
*5 times a day for the Chinese calibration signal 
World Time 
31 time zones (48 cities + coordinated universal time), city code display, daylight saving on/off 
Size of case / total weight 
GW-7900B ...... 52.4 X 50.0 X 17.7 mm / 71 g 

=== 1 Year Warranty ===