The Ultimate Guide to All G-SHOCKs — composed by Experts
Can’t choose between G-SHOCK GA-B2100, GM-B2100 and GA-2100? Enjoy our comparison table and the best features unique list of each series.
We are trying to compare the watches from one collection or “similar” price categories. Besides, you may find our rating system and pros & cons section below. Enjoy!
GA-B2100 | GM-B2100 | ||
Price (Amazon) | |||
Year of first Release | 2022 | 2022 | 2019 |
Accuracy | Bluetooth (via phone app) | Bluetooth (via phone app) | ±15 seconds per month |
SmartWatch Features | Yes | Yes | No |
Light | Double LED light (Super Illuminator) | Double LED light (Super Illuminator) | Neobrite (hands and hour markers) Double LED light |
Alarm | 5 daily alarms | 5 daily alarms | 5 daily alarms |
Timer | Measuring unit: 1 second | Measuring unit: 1 second | Measuring unit: 1 second |
Stopwatch | 1/100-second stopwatch | 1/100-second stopwatch | 1/100-second stopwatch |
Hourly Time Signal | Yes | Yes | Yes |
World Time | 38 time zones (38 cities + coordinated universal time), city code display, city name display, daylight saving on/off, auto summer time (DST) switching, Home city/World time city swapping | 38 time zones (38 cities + coordinated universal time), city code display, city name display, daylight saving on/off, auto summer time (DST) switching, Home city/World time city swapping | 31 time zones (48 cities + coordinated universal time), daylight saving on/off |
Screw Back | No | Yes | No |
Carbon Core Guard | Yes | No | Yes |
Case / bezel material | Carbon / Resin | Stainless steel | Carbon / Resin |
Glass | Mineral Glass | Mineral Glass | Mineral Glass |
Battery | Solar powered (CTL920) | Solar powered (CTL920) | 3 years on SR726W |
Size (mm) *we consider 48.9×42.8×13.4 to be a traditional watch size (as in DW-5600). So you are to compare how far or close the watch is to this size | 48.5×45.4×11.9 | 49.8×44.4×12.8 | 48.5×45.4×11.8 |
Full features (if you want to know more) |
*Want to compare some other features? Please, comment and we will improve our table.
G-SHOCK GA-B2100 Rating System
| Size | ★★★★★ |
| Weight | ★★★★★ |
| Functions | ★★★★★ |
| Materials | ★★★★★ |
| Price | ★★★★★ |
G-SHOCK GA-B2100 PROs & CONs
*we composed all points based on our ten years experience in writing about CASIO watches. We know what matters when you are searching for your ideal G-SHOCK!
– Solar Powered (Tough Solar). No need to worry about the battery change
– Octagonal Form (trendy & stylish design). Luxury brands are also boasting an OAK design
– Bluetooth (easy to operate via smartphone)
– Bluetoot Accuracy Calibration (checks if the watch shows the ideal time)
– Carbon Core Guard (the watch is more lightweight but stronger in comparison with a traditional case)
– Affordable price
– Good hands readability
– Additional digital display enhances functionality
– Double LED Light (one for the face and one for the digital display)
– Only traditional functions (World time, Stopwatch, Timer, Alarms etc.)
– Without sports functions (like GPS, Steptrecker, advanced timers)
– No Radio Calibration (you have only Bluetooth Time Sync)
– Difficult digital display readability (if the model uses a negative display)
– Budget-friendly materials but durable
– No Second Hand
G-SHOCK GM-B2100 Rating System
| Size | ★★★★ |
| Weight | ★ |
| Functions | ★★★★★ |
| Materials | ★★★★ |
| Price | ★★ |
G-SHOCK GM-B2100 PROs & CONs
*we composed all points based on our ten years experience in writing about CASIO watches. We know what matters when you are searching for your ideal G-SHOCK!
– Full-metal Oak (very popular bezel design)
– Luxe Look (like other premium brands of much higher price)
– Minimalistic Design
– Slim module (good for classic wear)
– Solar Powered (Tough Solar)
– Screw-back case (like in old-school traditional watches but that also good for durability)
– Bluetooth (easy to operate via smartphone )
– Bluetooth Accuracy Calibration (checks if the watch shows the ideal time)
– Double LED Light (one for the face and one for the digital display)
– Doubtful readability (the hands are not very distinct in some series)
– Heavy (165 g while DW-5600 is 51 g)
– Mineral Glass (could be Sapphire)
– Not for everyday use (*too objective but still)
– Only traditional functions (World time, Stopwatch, Timer, Alarms etc.)
– High price (because of steel)
– No Radio Calibration (you have only – Bluetooth Time Sync)
– Difficult digital display readability (if the model uses negative type)
– No Second Hand
G-SHOCK GA-2100 Rating System
| Size | ★★★★★ |
| Weight | ★★★★★ |
| Functions | ★★★ |
| Materials | ★★★★★ |
| Battery Years | ★★★ |
| Price | ★★★★★ |
G-SHOCK GA-B2100 PROs & CONs
*we composed all points based on our ten years experience in writing about CASIO watches. We know what matters when you are searching for your ideal G-SHOCK!
– Solar Powered (Tough Solar). No need to worry about the battery change
– Octagonal Form (trendy & stylish design). Luxury brands are also boasting an OAK design
– Bluetooth (easy to operate via smartphone)
– Bluetoot Accuracy Calibration (checks if the watch shows the ideal time)
– Carbon Core Guard (the watch is more lightweight but stronger in comparison with a traditional case)
– Affordable price
– Good hands readability
– Additional digital display enhances functionality
– Double LED Light (one for the face and one for the digital display)
– Only traditional functions (World time, Stopwatch, Timer, Alarms etc.)
– Without sports functions (like GPS, Steptrecker, advanced timers)
– No Radio Calibration (you have only Bluetooth Time Sync)
– Difficult digital display readability (if the model uses a negative display)
– Budget-friendly materials but durable
– No Second Hand
Being a fan of CASIO watches since 2009, I strive to share my passion and knowledge with others. Through publishing short notes and curating all listings on this site, I hope to inspire fellow enthusiasts to explore the world of high-quality CASIO watches. A proud owner of GST-B200, GG-1000, GA-110. Remember: Fake Watches are for Fake People.
Other G-SHOCK listings GA-2100 is in!
*you may find similar watches there
Other G-SHOCK listings GM-B2100 is in!
*you may find similar watches there
Other G-SHOCK listings GA-B2100 is in!
*you may find similar watches there
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