G-SHOCK 2100 Series GA-2100CM-5A, front view
G-SHOCK 2100 Series GA-2100CM-5A, close-up detail
G-SHOCK 2100 Series GA-2100CM-5A, angled view
G-SHOCK 2100 Series GA-2100CM-5A, rear view showing the caseback
G-SHOCK 2100 Series GA-2100CM-5A, front view
G-SHOCK 2100 Series GA-2100CM-5A, close-up detail
G-SHOCK 2100 Series GA-2100CM-5A, angled view
G-SHOCK 2100 Series GA-2100CM-5A, rear view showing the caseback
G-SHOCK 2100 Series GA-2100CM-5A, front view
G-SHOCK 2100 Series GA-2100CM-5A, close-up detail
G-SHOCK 2100 Series GA-2100CM-5A, angled view
G-SHOCK 2100 Series GA-2100CM-5A, rear view showing the caseback
G-SHOCK 2100 Series GA-2100CM-5A, front view
G-SHOCK 2100 Series GA-2100CM-5A, close-up detail
G-SHOCK 2100 Series GA-2100CM-5A, angled view
G-SHOCK 2100 Series GA-2100CM-5A, rear view showing the caseback

🛡 Authorized retailer • Manufacturer warranty included

G-SHOCK 2100 Series GA-2100CM-5A

$145.00
Free Shipping US orders over $50 after discounts

The octagonal G-SHOCK formula, with a little more personality.

48.5 × 45.4 mmCase size
11.8 mmHeight
200 mWater res.

The octagonal G-SHOCK formula, with a little more personality.

The GA2100CM-5A centers on camouflage finish, and 200m water resistance. It keeps the core G-SHOCK proposition intact: a watch designed to be worn, not babied.

Our take

The 2100 shape is one of the easiest G-SHOCK designs to wear day to day. This reference is mostly about choosing the finish that feels like you.

Know...

  • Sku: GA2100CM-5A
  • Available: Available to order
  • Vendor: G-Shock
Usually ships within 7–10 business days.
Authorized retailerReal watches. Real brands.
G-Shock official warrantyIncluded with your watch
30-day returnsChanged your mind? You've got 30 days
4.5 ★ on GoogleRated by Watch It clients
G-SHOCK 2100 Series GA-2100CM-5A, front view
G-SHOCK 2100 Series GA-2100CM-5A
$145.00

Why Watch It?

AUTHORIZED RETAILER

Real watches. Real brands. Authorized retailer.

MANUFACTURER WARRANTY

Manufacturer Warranty, backed by the brand

30-DAY RETURNS

Changed your mind? You've got 30 days

Unworn items only. Excludes clearance items and gift cards.
★
4.5 ★ ON GOOGLE

Rated by Watch It clients

About this watch

The GA2100CM-5A centers on camouflage finish, and 200m water resistance. It keeps the core G-SHOCK proposition intact: a watch designed to be worn, not babied.

Our take

The 2100 shape is one of the easiest G-SHOCK designs to wear day to day. This reference is mostly about choosing the finish that feels like you.

Know before you buy

Case: 48.5 × 45.4 × 11.8 mm. Water resistance: 200 meters. Crystal: Mineral Glass. Power: 3 years on SR726W X 2.

Open Technical Data for the full dimensions and materials, or Features for the function list.

Specifications

Case size48.5 × 45.4 mm
Case height11.8 mm
Case materialCarbon
CrystalMineral Glass
StrapResin
Water resistance200 m
Power / reserve3 years on SR726W X 2
Weight51 g

FAQ

Is this watch new and from an authorized dealer?

Yes. Watch It is an authorized G-Shock retailer, and your watch comes with the G-Shock official warranty.

What does the warranty cover?

Your G-Shock official warranty is included with your watch. If you need help with a warranty claim, email support@watchitusa.com with your order number.

What is your return policy?

You have 30 days after you receive your item to request a return. Items must be unworn, unused, with tags, in their original packaging, and with your receipt. Clearance items and gift cards cannot be returned. To start a return, email support@watchitusa.com.

How long does shipping take?

Most watches ship within 2 to 3 days. Some ship from a different fulfillment center and take 7 to 10 business days. The expected shipping time for each watch is shown on its product page.

Do you ship internationally?

For international shipping, email support@watchitusa.com or call +1 463-245-8423, Monday to Friday, 9 AM to 6 PM EST.

How can I reach you?

Email support@watchitusa.com or call +1 463-245-8423, Monday to Friday, 9 AM to 6 PM EST.

G-SHOCK, the watch that brought the new concept of toughness to the timepiece.
It began with a reckless challenge to the conventional wisdom of the day, a developer’s belief that it was possible to construct a watch that wouldn’t break, even if dropped. Project Team Tough was formed to build it in 1981.
The team created over 200 prototypes one after another over a period of about two years. They finally arrived at a shock-resistant structure. This marked the birth of a technology that is tough to the core.
And G-SHOCK has continued its unceasing evolution ever since, in pursuit of greater toughness in every respect, from structure and materials to functions. Today, the development team’s passion for challenge and constant efforts have reached fruition in Triple G Resist, a structure with the strength to withstand 3 types of gravitational acceleration.

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