The Sleek, Rugged, Monochrome Black G-SHOCK GA2100-1A1 Watch
The GA2100 family of watches was unveiled in 2019, and theyve since become some of G-SHOCKs best sellers. The octagonal bezel and boldly raised hour markers are popular design features. They often speak to those who need reliability, performance, and ruggedness when working outdoors, when exploring the wild places in the world, or when serving with pride and honor in the military. The G-SHOCK GA2100-1A1 in monochromatic black often appeals to those who dont need a watch that announces its presence, but instead need a watch thats admired when noticed.
Built with a Carbon Core Guard structure, the GA2100-1A1 offers incredible strength that lives up to the G-SHOCK standard in shock resistance. That strength is delivered with a slim case and compact form, an engineering feat that Casio proudly details in its history of the GA2100. The slim design is not only tough, it boasts 200m water resistance (wr 20 bar) with a case thats only 11.8mm thick. It's clear that the GA2100-1A1 delivers impeccable performance in a sleek and compact form.
The GA2100-1A1 also conquers the dark. It houses a double LED lighting system: a Super Illuminator for the analog face is coupled with a Super Illuminator for the digital display to ensure an easy read in the dark.
Case size (L W H)48.5 45.4 11.8 mm
Weight51 g
Case and bezel material:Carbon / Resin
Resin Band
Shock Resistant
Carbon Core Guard structure
200-meter water resistance
Approx. battery life: 3 years on SR726W X 2
Mineral Glass
World time:31 time zones (48 cities coordinated universal time), daylight saving on/off
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 second to 24 hours (1-second increments, 1-minute increments and 1-hour increments)
5 daily alarms
Hourly time signal
Double LED light
LED light for the face (Super illuminator, selectable illumination duration (1.5 seconds or 3 seconds), afterglow)
LED backlight for the digital display (Super illuminator, selectable illumination duration (1.5 seconds or 3 seconds), afterglow)
LED:White
Full auto-calendar (to year 2099)
Button operation tone on/off
Accuracy: 15 seconds per month
12/24-hour format
Hand shift feature (Hands move out of the way to provide an unobstructed view of digital display contents.)
Regular timekeeping:
Analog: 2 hands (hour, minute (hand moves every 20 seconds)), 1 dial (day)
Digital: Hour, minute, second, pm, month, date
