The GA-2100 bezel upgradeGA-2100 Moissanite Bezel — Rose Gold$350.00 USDBezel only · sold separatelyView bezel
G-SHOCK GA-2100 — Black Dial, Blue Accents
$120.00 USD
The GA-2100 in Black and Blue pairs an octagonal bezel with an analog-digital display. World time, LED lighting, a stopwatch, countdown timer and daily alarms add useful functions to its distinctive dial design.
Watch details
Casio G-Shock GA-2100
The Casio G-Shock GA-2100 combines G-Shock's legendary toughness with a sleek, modern design. Featuring the iconic octagonal bezel, lightweight Carbon Core Guard construction, and a slim profile, it's built for everyday wear without compromising durability.
Whether you're at work, in the gym, or exploring outdoors, the GA-2100 delivers reliable performance, comfort, and timeless style.
Features
- Shock-resistant construction
- Carbon Core Guard structure for lightweight durability
- Analog-digital display
- Double LED light for enhanced visibility
- World Time (31 time zones, 48 cities + UTC)
- 1/100-second stopwatch
- Countdown timer
- 5 daily alarms
- Full auto calendar
- Hand shift feature for an unobstructed digital display
- 12/24-hour time format
- Approx. 3-year battery life
Water use: Please contact us to confirm the rating for this specific watch before swimming or submerging it. Custom modifications can affect water resistance.
Shipping & returnsFree standard U.S. shipping
Shipping
Check the product’s restock notice before ordering. Items on hand usually dispatch within a few business days; standard restock items within 2–3 weeks of ordering, unless the product page states otherwise. Blue Paint and Blue Animated are currently being restocked: estimated dispatch for new orders is 4–5 weeks from the order date during the current delay. Carrier transit is additional: allow 3–7 business days within the United States after dispatch. These are estimates, and carrier delays can affect delivery. Standard U.S. shipping is free, with no minimum order. We currently ship to U.S. addresses only. View shipping details
14-day return requests
Return requests are accepted within 14 days of delivery for eligible, unworn items in their original packaging. Sale items, custom products and other exclusions apply. Contact us before sending anything back. Read the return policy
Secure Stripe checkout
Fit & care
Casio size reference
- Standard model
- GA-2100
- Case sizeL × W × H
- 48.5 × 45.4 × 11.8 mm
- Stock-band wrist fit
- 145–215 mmApprox. 5.7–8.5 in
These are Casio’s standard-model measurements. Custom cases and bracelets can change size and fit; contact us to confirm a customized piece.
For fit help, measure around your wrist with a flexible tape and send us your measurement.
Clean your watch gently with a soft, dry cloth. Check this model’s listed specifications and care instructions before exposing it to water.
Contact GshockVendorMake it your own
Confirm your exact model and case before ordering. Custom cases need a fit check. Ask us about fit
The full setup
What’s included
More than the watch. Here’s what comes with your order.
- Your selected G-SHOCK Included
- Presentation box & watch tin Included
- Casio gift bag Included
- Instruction booklet Included
- Card & hang tag Included
Included with every G-SHOCK watch order.
Worn your way.
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