Search  for anything...
G-Shock

G-Shock Casio GA-B2100CY-1A Caution Yellow Series

  • Based on 42 reviews
Condition: New
Checking for product changes
$135.93 Why this price?
Save $14.07 was $150.00

Buy Now, Pay Later

As low as $22.66 / mo
  • – 6-month term
  • – No impact on credit
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout.

Payment plans are offered through our trusted finance partners Klarna, PayTomorrow, Affirm, Afterpay, Apple Pay, and PayPal. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Free shipping on this product

30-day refund/replacement

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

Availability: Only 4 left in stock, order soon!
Fulfilled by Amazon
Arrives Sunday, Jun 22
Order within 13 minutes
Available payment plans shown during checkout

Recently Viewed

Description

Turn heads and grab attention with a rugged timepiece; a bold, eye-catching black and yellow color scheme. Tough yet stylish designs feature basic black, accented with touches of the bright yellow used for emergency rescues and safety signs. A cool, versatile look that complements both casual and work styles.

Package Dimensions ‏ : ‎ 4.37 x 3.78 x 2.76 inches; 5.93 ounces


Item model number ‏ : ‎ GAB2100CY-1A


Department ‏ : ‎ mens


Batteries ‏ : ‎ 1 LR44 batteries required. (included)


Date First Available ‏ : ‎ October 27, 2023


Manufacturer ‏ : ‎ Casio


Brand, Seller, or Collection Name: G-Shock


Clasp: Buckle


Model number: GAB2100CY-1A


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Sunday, Jun 22

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Similar Products

Top Amazon Reviews

    • These GA B2100 Watches Are Top Notch
I’ve bought five different versions of the GA B2100 and these are really nice timepieces. The resin bezel & bands are OK, but when you mod them with the stainless steel kits, they tend to really pop. My plan is to modify this model with an SKXMOD mod kit, black bracelet & bezel w/rose gold rivets. I have this tendency to name my modded G-Shocks, this one is going to be my ‘Bumble B2100’. Seriously, these Casio GA B2100 series tough solar, bluetooth watches are very good. Nicely designed. Solar powered so you don’t have the hassle of replacing batteries every couple years. Sets itself with the intuitive and very simple Bluetooth app you simply download to your smart phone. It updates the watch twice daily so the time is always accurate right down to the second. Has all the standard G-Shock features; stopwatch, timer, chime, a very cool reminder feature and phone finder via the bt app. If you misplace your phone, you can locate it quick & easy with this audible function. The watch itself is highly customizable. And with these metal mod kits, you can build a your own unique watch. G-Shock for life! 5*****Stars on all these Casio, G-Shock GA B2100 series timepieces from me. Buy it, mod it, try it and simply enjoy your Casioak. Mr. Lee’s unbiased review. ... show more
Reviewed in the United States on November 24, 2024 by Mr. Lee
    • Very satisfied
Satisfied on the item.
Reviewed in the United States on April 28, 2025 by Jason Carl
    • Great work watch!
Awesome watch!! Just charge it, might take a few days but it’s worth!!! Watch was shipped fast and earlier than expected.
Reviewed in the United States on January 28, 2025 by Jesse Moody
    • One of the best modern G Shocks!
Minimal looking, super cool watch! The yellow is spot on. The only slight issue is with the negative LED display. You need to look at it at a very particular angle to really see the text. Coupled with the small size, the display really isn’t legible most of the time, which is certainly a pity!! The tough solar and dual timezone are all excellent features!! ... show more
Reviewed in the United States on November 22, 2024 by CM
    • Casioak Caution colors is the best yet
Black and yellow caution ⚠️ really looks awesome. Feels durable. Great everyday watch
Reviewed in the United States on February 2, 2025 by Ray d.
    • Ask a lot of questions before you buy!
Review Image by jorge arroyo jorge arroyo
Review Image by jorge arroyo jorge arroyo
Review Image by jorge arroyo jorge arroyo
Very disappointed with this watch. I’ve charged it all day long with a led charging lamp purchase here on amazon. It doesn’t hold a charge for long compared to my other solar Casio. I was expecting a new watch? I just got back from London and purchased a green bluetooth Casio. And it had all of its protection stickers on this one not. Ask a lot of questions before buying. I wish I did. I know my watches I’ve purchase plenty here! It’s all ways on medium charge. ... show more
Reviewed in the United States on March 19, 2025 by jorge arroyo jorge arroyo
    • Hace su trabajo.
Tal cual aparece. Un reloj para todo uso.
Reviewed in the United States on January 26, 2025 by Daniel Ríos
    • The affordable watch
Review Image by Laura Laura
This watch was exactly what my husband was looking for to wear on job sites.
Reviewed in the United States on January 4, 2025 by Laura Laura

Can't find a product?

Find it on Amazon first, then paste the link below.