(Notice: This page may contain affiliate links to Amazon, eBay, or Reeds Jewelers that earn us a commission on purchases. See our full affiliate disclosure.)
The G-Shock GA-B2100 is an upgraded version of the bestselling 2100 octagonal model with Tough Solar power and Bluetooth mobile link. By linking with a smartphone, the Bluetooth functions offer automatic time adjustment, a time place log, date reminders, world time with approximately 300 cities, auto summer time (DST) switching, timer and alarm settings, and phone finder.
Size: Medium Dimensions (L x W x H): 48.5 x 45.4 x 11.9 mm Weight: 52 grams Module:5689 (instruction manual at casio.com) Battery Type (Lifespan): Solar Rechargeable Series Launch Year: 2022 Nickname: Solar CasiOak
Notable Features: Tough Solar, Bluetooth Mobile Link, World Time, 1/100-Second Stopwatch, Timer, 5 Daily Alarms, Double LED Light
See full specifications for GAB2100-1A under “Additional information” tab above.
The G-Shock GA-B2100 is an upgraded version of the bestselling 2100 octagonal model with Tough Solar power and Bluetooth mobile link. By linking with a smartphone, the Bluetooth functions offer automatic time adjustment, a time place log, date reminders, world time with approximately 300 cities, auto summer time (DST) switching, timer and alarm settings, and phone finder.
Alarm Settings, Auto Summer Time (DST) Switching, Auto Time Correction, Hand Alignment Correction, Phone Finder, Reminder, Time & Place Log, Timer Settings, World Time (approx. 300 cities)
Home/World Time City Swap, World Time
38
38 + UTC
Auto DST Switching, DST On/Off
Stopwatch
1 second (after first hour), 1/100 second (first hour)
23:59’59”
elapsed time, lap times, split time
Countdown Timer
1 second
60 minutes
1 second to 60 minutes
1 second
5 Daily
Hourly Time Signal
1.5 or 3 Second Afterglow, Double LED, LCD Backlight, LED, Super Illuminator
The G-Shock GA-2100 was launched in 2019 and quickly reached classic status in just a few years, achieving a place alongside such long-running models like the DW-5600 from the ’80s, the DW-6900 from the ’90s, and the GA-110 from the ’10s. The GA-2100 is akin to a DW-5600 in an analog-digital form. The bezel and band of the watch borrows their shapes from the classic DW-5000 origin model, and the octagonal bezel has earned it the nickname “CasiOak” among fans.
Some specifications (price, materials, weight, Neobrite, etc.) for individual models may vary within a series. Some models may not be available in all countries. Visit the linked articles in gallery images for more info on specific models. About The Specs Catalog | Features Glossary | Specs Home
Alarm Settings, Auto Summer Time (DST) Switching, Auto Time Correction, Hand Alignment Correction, Phone Finder, Reminder, Time & Place Log, Timer Settings, World Time (approx. 300 cities)
To provide the best experiences, we and our partners use technologies like cookies to store and/or access device information. Consenting to these technologies will allow us and our partners to process personal data such as browsing behavior or unique IDs on this site and show (non-) personalized ads. Not consenting or withdrawing consent, may adversely affect certain features and functions.
Click below to consent to the above or make granular choices. Your choices will be applied to this site only. You can change your settings at any time, including withdrawing your consent, by using the toggles on the Cookie Policy, or by clicking on the manage consent button at the bottom of the screen.
Functional
Always active
The technical storage or access is strictly necessary for the legitimate purpose of enabling the use of a specific service explicitly requested by the subscriber or user, or for the sole purpose of carrying out the transmission of a communication over an electronic communications network.
Preferences
The technical storage or access is necessary for the legitimate purpose of storing preferences that are not requested by the subscriber or user.
Statistics
The technical storage or access that is used exclusively for statistical purposes.The technical storage or access that is used exclusively for anonymous statistical purposes. Without a subpoena, voluntary compliance on the part of your Internet Service Provider, or additional records from a third party, information stored or retrieved for this purpose alone cannot usually be used to identify you.
Marketing
The technical storage or access is required to create user profiles to send advertising, or to track the user on a website or across several websites for similar marketing purposes.
To provide the best experiences, we use technologies like cookies to store and/or access device information. Consenting to these technologies will allow us to process data such as browsing behavior or unique IDs on this site. Not consenting or withdrawing consent, may adversely affect certain features and functions.
Functional
Always active
The technical storage or access is strictly necessary for the legitimate purpose of enabling the use of a specific service explicitly requested by the subscriber or user, or for the sole purpose of carrying out the transmission of a communication over an electronic communications network.
Preferences
The technical storage or access is necessary for the legitimate purpose of storing preferences that are not requested by the subscriber or user.
Statistics
The technical storage or access that is used exclusively for statistical purposes.The technical storage or access that is used exclusively for anonymous statistical purposes. Without a subpoena, voluntary compliance on the part of your Internet Service Provider, or additional records from a third party, information stored or retrieved for this purpose alone cannot usually be used to identify you.
Marketing
The technical storage or access is required to create user profiles to send advertising, or to track the user on a website or across several websites for similar marketing purposes.