Casio G-Shock GMAS2100
Slim, lightweight, compact watches with octagonal bezels and a monochromatic look. The new GMAS2100 series downsizes the popular GA2100 to create a simple and slim design. The octagonal bezel, flat face, simple bar hour markers, and carbon core guard structure that are distinctive features of the GA2100 are now available in a compact configuration. The GMAS2100-1A sports a classic black colorway with rose gold accents.
SPECIFICATIONS
Brand:Ā Casio
SKU: GMAS2100-1A
Size:Ā 46.2 Ć 42.9 Ć 11.2 mm
Case:Ā Resin
Colour: Black, Rose Gold
Dial Colour:Ā Black, Negative
Strap Material:Ā Resin
Movement:Ā Japanese
Crystal:Ā Mineral
Watch Features:Ā
- Carbon Core Guard structure
- 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 alarmsHourly 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)
- Full auto-calendar (to year 2099)
- Button operation tone on/off
- Accuracy: ±15 seconds per month
- Battery: SR726W X 2
- Module: 5611
Water Proof:Ā 20ATM/200M
Warranty:Ā 1Ā Year. More Information ClickĀ here.
Questions about Shipping and Returns? ClickĀ here.
Product Information
Product Information
Shipping & Returns
Shipping & Returns

Casio G-Shock GMAS2100
Casio G-Shock GMAS2100
Slim, lightweight, compact watches with octagonal bezels and a monochromatic look. The new GMAS2100 series downsizes the popular GA2100 to create a simple and slim design. The octagonal bezel, flat face, simple bar hour markers, and carbon core guard structure that are distinctive features of the GA2100 are now available in a compact configuration. The GMAS2100-1A sports a classic black colorway with rose gold accents.
SPECIFICATIONS
Brand:Ā Casio
SKU: GMAS2100-1A
Size:Ā 46.2 Ć 42.9 Ć 11.2 mm
Case:Ā Resin
Colour: Black, Rose Gold
Dial Colour:Ā Black, Negative
Strap Material:Ā Resin
Movement:Ā Japanese
Crystal:Ā Mineral
Watch Features:Ā
- Carbon Core Guard structure
- 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 alarmsHourly 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)
- Full auto-calendar (to year 2099)
- Button operation tone on/off
- Accuracy: ±15 seconds per month
- Battery: SR726W X 2
- Module: 5611
Water Proof:Ā 20ATM/200M
Warranty:Ā 1Ā Year. More Information ClickĀ here.
Questions about Shipping and Returns? ClickĀ here.
Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
Slim, lightweight, compact watches with octagonal bezels and a monochromatic look. The new GMAS2100 series downsizes the popular GA2100 to create a simple and slim design. The octagonal bezel, flat face, simple bar hour markers, and carbon core guard structure that are distinctive features of the GA2100 are now available in a compact configuration. The GMAS2100-1A sports a classic black colorway with rose gold accents.
SPECIFICATIONS
Brand:Ā Casio
SKU: GMAS2100-1A
Size:Ā 46.2 Ć 42.9 Ć 11.2 mm
Case:Ā Resin
Colour: Black, Rose Gold
Dial Colour:Ā Black, Negative
Strap Material:Ā Resin
Movement:Ā Japanese
Crystal:Ā Mineral
Watch Features:Ā
- Carbon Core Guard structure
- 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 alarmsHourly 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)
- Full auto-calendar (to year 2099)
- Button operation tone on/off
- Accuracy: ±15 seconds per month
- Battery: SR726W X 2
- Module: 5611
Water Proof:Ā 20ATM/200M
Warranty:Ā 1Ā Year. More Information ClickĀ here.
Questions about Shipping and Returns? ClickĀ here.











