GA-2100New
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GA-2100 · CasiOakIn stock
G-SHOCK GA-2100 — Black & Red
$120Black / Red
Free standard U.S. shipping
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- Same-day dispatchOrder by 6 PM PT, Mon–Fri, from Los Angeles
- Free U.S. shippingNo minimum · 3–7 business days
- 14-day returnsEligible, unworn, in original packaging
- Made rightDefective, damaged or not what you ordered? We'll make it right
Order by 6 PM PT (Mon–Fri) and it ships the same day
Free standard U.S. shipping · 3–7 business days in transit
Studio Mon–Fri 9 AM–6 PM PT
- Base model
- GA-2100
- Case shape
- Octagonal
- Display
- Analog-digital
- Materials
- Carbon
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.
Full specifications
| Base model | GA-2100 |
|---|---|
| Case shape | Octagonal |
| Display | Analog-digital |
| Materials | Carbon |
| Colorway | Black, Red |
| Type | Watches |
| Dispatch | ships same day from Los Angeles when ordered by 6 PM PT (Mon–Fri) |
GA-2100 base model facts
| Case size | 48.5 × 45.4 × 11.8 mm |
|---|---|
| Weight (stock) | 51 g (1.8 oz) |
| Water resistance (stock) | 200 m / 20 bar |
| Power | 3-year battery |
| Module | 5611 |
These are Casio's specifications for the stock GA-2100-1A1. Customization can change finish and materials and can affect water resistance, so contact us to confirm this piece before swimming.
Shipping & returns
Standard U.S. shipping is free with no minimum. In stock — ships same day from Los Angeles when ordered by 6 PM PT (Mon–Fri). Allow 3–7 business days for U.S. delivery after dispatch. We also ship to Canada for a flat $35 per order (6–10 business days after dispatch); Canadian duties and taxes aren't included and are paid on delivery. Choose your country in the bag.
Return requests are accepted within 14 days of delivery for eligible, unworn items in original packaging; return shipping is paid by the buyer. If a piece arrives defective, damaged or isn't what you ordered, we make it right, return shipping included. Sale items and pieces made or personalized to your request can't be returned. Read the refund policy.
Authenticity & disclaimer
Bezelwright (BW) is an independent customizer operated by Caventra LLC and is not affiliated with, endorsed by, or sponsored by Casio Computer Co., Ltd. G-SHOCK, Baby-G and Casio are trademarks of Casio Computer Co., Ltd., used here only to describe the base models our products are built on or fit.
Fig. 01Build sheet
Know exactly what's on your wrist.
The base model, the case and the colorway, next to Casio's stock specs for the GA-2100.
The full GA-2100 guide- 01Base model: G-SHOCK GA-2100 “CasiOak” · module 5611
- 02Case: 48.5 × 45.4 × 11.8 mm · Casio stock
- 03Colorway: Black / Red
- 04Weight: 51 g · Casio stock
- 05Water: 200 m stock · custom work can change it, ask us
- Case width 45.4 mm, length 48.5 mm.
Case, weight and water resistance are Casio's figures for the stock GA-2100; custom parts can change weight and water resistance, so ask us about a specific piece before you swim with it.
Moissanite bezels for the GA-2100 · sold separately
Completethe look
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About this custom G-SHOCK watch
When will the G-SHOCK GA-2100 — Black & Red ship?
It ships same day from Los Angeles when ordered by 6 PM PT (Mon–Fri). U.S. delivery then takes 3–7 business days. Standard U.S. shipping is free.
What base model is this watch?
This piece is built on the GA-2100 silhouette (nicknamed the “CasiOak”). The slim octagonal G-SHOCK fans nicknamed the “CasiOak”. Its clean eight-sided bezel is the most popular canvas for custom colorways, metal cases and moissanite bezels.
Can I swim with this GA-2100?
Casio rates the stock GA-2100 to 200 m (20 bar). Custom modifications can affect water resistance, so contact us to confirm the rating for this specific watch before swimming or submerging it.
How long does the battery last?
The stock GA-2100 runs about 3 years on SR726W × 2, according to Casio. Battery life can vary with use of the light and alarms.
Can I return my order?
Return requests are accepted within 14 days of delivery for eligible, unworn items in their original packaging. Return shipping is paid by the buyer. Sale items and pieces made or personalized to your request can't be returned. If a piece arrives defective, damaged or isn't what you ordered, contact us right away and we'll make it right, return shipping included. Email us before sending anything back so we can confirm eligibility and share return instructions. The same applies to orders shipped to Canada; Canadian duties, taxes and carrier fees paid on import aren't refunded by us.
Are Bezelwright watches made by Casio?
No. Bezelwright is an independent customizer and is not affiliated with Casio. Our watches are custom styles built on or inspired by G-SHOCK base models, and our bezels are aftermarket accessories. G-SHOCK is a trademark of Casio Computer Co., Ltd.