Original Brand New 100%
 
 
Shock resistant  
 
 
200M water resistant
 
 
Tough Solar
 
 
Double LED light
 
 
LED light for the face (Full auto LED light, Super illuminator, selectable illumination duration (1.5 seconds or 3 seconds), afterglow)
 
 
LED backlight for the digital display (Full auto LED light, Super illuminator,selectable illumination duration (1.5 seconds or 3 seconds), afterglow)
 
 
World time
 
 
31 time zones (48 cities + coordinated universal time), daylight saving on/off
 
 
Home city/World time city swapping
 
 
1/100-second stopwatch
 
 
Measuring capacity: 59'59.99"
 
 
Measuring modes: Elapsed time, split time, 1st-2nd place times
 
 
Countdown timer
 
 
Measuring unit: 1 second
 
 
Countdown range: 100 minutes
 
 
Countdown start time setting range: 1 second to 100 minutes (1-second increments and 1-minute increments)
 
 
5 daily alarms
 
 
Hourly time signal
 
 
Hand shift feature (Hands move out of the way to provide an unobstructed view of digital display contents)
 
 
Battery level indicator
 
 
Power Saving (display goes blank to save power when the watch is left in the dark)
 
 
Full auto-calendar (to year 2099)
 
 
12/24-hour format
 
 

 Button operation tone on/off
 
 
Regular timekeeping
 
 
Analog: 2 hands (hour, minute (hand moves every 20 seconds))
 
 
Digital: Hour, minute, second, pm, month, date, day
 
 
Accuracy: ±15 seconds per month
 
 
Approx. battery operating time:
 
 
8 months on rechargeable battery (operation period with normal use without exposure to light after charge)
 
 
19 months on rechargeable battery (operation period when stored in total darkness with the power save function on after full charge)
 
 
Module No. 5525
 
 
Size of case / total weight
 
 
GST-S310D..........55.9 X 49.3 X 15.3 mm / 183 g
 
 
GST-S300............55.9 X 49.3 X 15.3 mm / 84 g
 
 
GST-S300BD.......55.9 X 49.3 X 15.3 mm / 172 g
 
 
GST-S300G..........55.9 X 49.3 X 15.3 mm / 84 g