Can’t choose between G-Shock GD-100, GW-7900 and G-2900? Enjoy our comparison table and the best features unique list of each series.
GD-100 
GW-7900-1 G-2900-1B
Price (Amazon) | |||
Year of first Release | 2010 | 2009 | 2002 |
Accuracy | ±15 seconds per month | Radio-controlled (via atomic watch signals) | ±15 seconds per month |
SmartWatch Features | No | No | No |
Light | LED Backlight | Full-Auto Illuminator | Electro-luminescent backlight |
Data Memory | No | No | Yes |
Moon Graph | No | Yes | No |
Tide Graph | No | Yes | No |
Case / bezel material | Resin | Resin | Resin / Stainless steel |
Glass | Mineral Glass | Mineral Glass | Mineral Glass |
Battery | 7 years on CR2025 | Solar Powered CTL1616 | 10 years on CR2025 |
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 | 55×51.2×17.4 | 52.40x50x17.70 | 52.4×45.9×16.5 |
Full features (if you want to know more) |
*Want to compare some other features? Please, comment and we will improve our table.
GD-100 Profile
Average Amazon Price: $140 (yes, we may earn a commission on qualifying purchases from our links to Amazon)
Year of first release: 2010
Lineup: STANDART DIGITAL (This Line includes Digital G-Shocks that are the best in “price/quality” category. Usually have traditional digital functions.) All G-Shock Standart Digital Watches →
Nominations: best design, best price
The most distinctive specs:
– 200-meter water resistance (good for swimming but not for deep diving)
– Multi time (you can check the current time in 4 different cities at once)
– Big face (gives a look of power and strength for the watch)
Other colors and full specs: GD-100 Wiki Page
GW-7900 Profile
Average Amazon Price: 90$ (yes, we may earn a commission on qualifying purchases from our links to Amazon)
Year of first release: 2009
Lineup: STANDART DIGITAL (This Line includes Digital G-Shocks that are the best in “price/quality” category. Usually have traditional digital functions.) All G-Shock Standart Digital Watches →
Nominations: best design, best functions, best price
The most distinctive specs:
– 200-meter water resistance (good for swimming but not for deep diving)
– Tough Solar (CASIO’s original solar-charging system converts not only sunlight but also light from fluorescent lamps and other sources into power)
– Radio-controlled Watch; Multi band 6 (additional way for time sync. This watch receives time calibration radio signals that keep the displayed time accurate)
– Moon data (moon age of the specific date)
– Tide graph (tide level for specific date and time)
Other colors and full specs: GW-7900 Wiki Page
G-2900 Profile
Average Amazon Price: $90 (yes, we may earn a commission on qualifying purchases from our links to Amazon)
Year of first release: 2002
Best for: Top in G-Shock Lookbooks
Lineup: STANDART DIGITAL (This Line includes Digital G-Shocks that are the best in “price/quality” category. Usually have traditional digital functions.) All G-Shock Standart Digital Watches →
Nominations: best design, best price
The most distinctive specs:
– 200-meter water resistance (good for swimming but not for deep diving)
– e-DATA MEMORY (Memory for storing data of web addresses and e-mail – you can always access important addresses even on the go)
– 10-years battery
Other colors and full specs: G-2900 Wiki Page
Best Guide to All G-Shock Watches — composed by Experts