Turn heads and grab attention with a rugged timepiece boasting a bold, eye-catching black and yellow color scheme.

Tough, yet stylish designs feature basic black, accented with touches of the bright yellow used for emergency rescues and safety signs.

A cool, versatile look that complements both casual and work styles.

Choose from five models: the GA-B001 with Bluetooth¶© connectivity; the GW-B5600 with Bluetooth¶© connectivity plus radio control; the GA-B2100 with Bluetooth¶© connectivity and solar charging; the large case GA-100; or the GA-700 with front button design.

Case / bezel material: Resin
Resin Band
Shock Resistant
Mineral Glass
200-meter water resistance
Tough Solar (Solar powered)
LED backlight (Super illuminator)
Full auto LED light, selectable illumination duration (2 seconds or 4 seconds), afterglow
LED:White
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 States)
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)
*5 times a day for the Chinese calibration signal
Manual receive
The latest signal reception results
Mobile link (Wireless linking using Bluetooth¶©)
5 World time
39 time zones (39 cities +coordinated universal time), daylight saving on/off, Home city/World time city swapping, auto summer time (DST) switching
1/100-second stopwatch
Measuring capacity:
00'00''00~59'59''99 (for the first 60 minutes)
1:00'00~23:59'59 (after 60 minutes)
Measuring unit:
1/100 second (for the first 60 minutes)
1 second (after 60 minutes)
Measuring modes: Elapsed time, split time, 1st-2nd place times
Countdown timer
Measuring unit: 1 second
Countdown range: 24 hours
Countdown start time setting range: 1 minute to 24 hours (1-minute increments and 1-hour increments)
5 daily alarms (with 1 snooze alarm)
Hourly time signal
Low battery alert
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
Date/month display swapping
Day display (days of the week selectable in six languages)
Button operation tone on/off
Regular timekeeping:
Hour, minute, second, pm, month, date, day
Accuracy: ¶ñ15 seconds per month (with no signal calibration and mobile link function)
Approx. battery operating time:
10 months on rechargeable battery (operation period with normal use without exposure to light after charge)
22 months on rechargeable battery (operation period when stored in total darkness with the power save function on after full charge)
Size of case : 48.9 Ç? 42.8 Ç? 13.4 mm
Total weight : 53 g