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Shipping Estimate
USA
- USA
- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Aug 25 - Aug 30
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For Your Every Summer RSVP, with Code: SUMMER15
Description
CASIO G-Shock DUO Bluetooth Yellow Resin GAB2100C-9AUpgrade the retro look you love with the octagonal GA 2100 line, which inherits the design concept of the very first G SHOCK, but now with Smartphone Link and Tough Solar power. Specifications Basic Information Case size (L W H) 48. 5 45. 4 11. 9 mm Weight 52 g Case and bezel material Case bezel material: Carbon Resin Band Resin Band Construction Shock Resistant Carbon Core Guard structure Water resistance 200 meter water resistance Power supply and
Upgrade the retro look you love with the octagonal GA-2100 line, which inherits the design concept of the very first G-SHOCK, but now with Smartphone Link and Tough Solar power.
Specifications
Basic Information
- Case size (L× W× H)
- 48.5 × 45.4 × 11.9 mm
- Weight
- 52 g
- Case and bezel material
- Case / bezel material: Carbon / Resin
- Band
- Resin Band
- Construction
- Shock Resistant
- Carbon Core Guard structure
- Water resistance
- 200-meter water resistance
- Power supply and battery life
- Tough Solar (Solar powered)
Smartphone Link/App Connectivity Features
- Smartphone Link feature
- Mobile link (Wireless linking using Bluetooth®)
- Apps
- CASIO WATCHES
- App connectivity feature
- Auto time adjustment
- Easy watch setting
- Approximately 300 world time cities
- Time & place
- Reminder
- Phone finder
Exterior
- Mineral Glass
- Neobrite
Watch Features
- 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
- 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, lap/split time
- Countdown timer Measuring unit: 1 second Countdown range: 60 minutes Countdown start time setting range: 1 second to 60 minutes (1-second increments and 1-minute increments)
- Alarm/hourly time signal
- 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
- Calendar
- Full auto-calendar (to year 2099)
- Mute feature
- Button operation tone on/off
- Energy saving feature
- Power Saving (display goes blank to save power when the watch is left in the dark)
- Battery display/alert
- Battery level indicator
- Run time
- Approx. battery operating time: 7 months on rechargeable battery (operation period with normal use without exposure to light after charge) 18 months on rechargeable battery (operation period when stored in total darkness with the power save function on after full charge)
- Accuracy
- Accuracy: ±15 seconds per month (with no mobile link function)
- Other features
- Hand shift feature (Hands move out of the way to provide an unobstructed view of digital display contents.)
- 12/24-hour format
- Date/month display swapping
- Day display (days of the week selectable in six languages)
- Regular timekeeping: Analog: 2 hands (hour, minute (hand moves every 20 seconds)), 1 dial (battery level, mode) Digital: Hour, minute, second, pm, month, date, day
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.8 ★★★★★
Based on 13 reviews
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Product Reviews
★★★★★ 2
Great shoe, horrible lace design.
Size: 13, Color: White, Size: 13, Color: White
This shoes look great and the materials for the actual shoe feel great. They run a little big that doesn't bother me. Unfortunately, the lace design is horrible. I've now have 2 pairs of these shoes and both times the bottom lace has ripped out of the stitching. The first time was on the 2nd day I wore them, and the replacement pair to those it happened after I walked 20 feet. Both times I've tied a knot in the bottom lace so that I could get through the day. Ideally these laces should be connected together and not attached to the shoe (this is how both of my Skechers Slip-ins are designed). Because I like the rest of the shoe so much I'm buying elastic laces to replace the horrible original laces.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 14, 2025
★★★★★ 5
Good value for the money.
Size: 9.5 Wide, Color: Beige
Comfortable right out of the box. Great style and well made. The more you wear the softer they get but maintain their overall appearance.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 25, 2026
★★★★★ 5
Very good quality for a reasonable price.
Size: 10, Color: Grey
Very good quality, very soft, very comfortable, look amazing, I’m very happy.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 23, 2026
★★★★★ 4
Comfortable fit for slip-in fabric shoes
Size: 14, Color: Black/Black
My first experience with Marc Joseph. I typically purchase dress and casual work shoes from Florsheim and occasionally Rockport. I'm giving these four stars because the initial fit and feel appear solid. Depending on the shoe brand I wear a size 14 or 15. My feet are slightly wide but I don't alway need wide fit. These size 14 fit well with wide enough toe box. I've tried slip in shoes before and they just don't feel right. These somehow work and there is no heel slip. My only reservation is the high lip on the heel for slip-in and hope they dont catch pant hems. I gave 4 stars because I'll have to determine durability. Granted they are a light fabric shoe with a soft rubber tread. I'd like them to last for at least 6 months..and use them for business casual work wear during warm weather.
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Reviewed in the United States on May 19, 2026
★★★★★ 5
Stylish and comfortable.
Size: 8 Wide, Color: Black/Black
Shoes look great and fits well. Definitely recommend pocking another pair.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 10, 2026
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