SKU: 4133748129

Casio G-Shock CasiOak Oasis Analog Digital GA-2100AS-5A Blue Dial 45mm Resin Strap Men's Watch

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Description

Casio G-Shock CasiOak Oasis Analog Digital GA-2100AS-5A Blue Dial 45mm Resin Strap Men's WatchThe Casio GA 2100AS 5A is a stunning addition to the globally celebrated "G Shock" lineup, universally recognized by watch enthusiasts as the "CasiOak" due to its iconic octagonal bezel. This specific model is part of the special "Oasis of Day and Night" collection, painting the legendary low profile silhouette in a refreshing desert sand beige. The serene, earthy base is dramatically offset by a vibrant, cool blue dial with blue green accents,

The Casio GA-2100AS-5A is a stunning addition to the globally celebrated "G-Shock" lineup, universally recognized by watch enthusiasts as the "CasiOak" due to its iconic octagonal bezel. This specific model is part of the special "Oasis of Day and Night" collection, painting the legendary low-profile silhouette in a refreshing desert sand beige. The serene, earthy base is dramatically offset by a vibrant, cool-blue dial with blue-green accents, evoking the image of a crystal-clear oasis suddenly emerging in a barren tropical landscape. It delivers a perfect blend of rugged utility and elevated, street-savvy fashion. The dial is a highly legible Blue Analog Digital Display that seamlessly marries traditional analog hands with a functional LCD screen positioned at the 4 o'clock mark. The deeply set 3D hour markers and bold hands are treated with Neobrite for quick readability, while a distinct day-of-the-week indicator sits cleanly at the 9 o'clock position. The watch is fully equipped with modern utility, including a 1/100-second stopwatch, a 24-hour countdown timer, world time for 48 cities, and five daily alarms. For low-light visibility, a bright double LED light (Super Illuminator) perfectly illuminates both the analog face and the digital readout. The dial is protected by a tough, scratch-resistant Mineral Glass crystal. At its core, this highly sought-after timepiece features a 45mm Bio-Based Resin Case (measuring 45.4mm across) that incorporates Casio's advanced Carbon Core Guard structure. This innovative engineering uses carbon fiber to protect the internal Casio Quartz Movement, allowing the watch to be remarkably thin at just 11.8mm while maintaining pure G-Shock toughness. Secured by a highly durable, flexible beige Resin Strap made from renewable organic resources, and boasting an impressive 200-meter water resistance, the GA-2100AS-5A is an ultra-comfortable, sustainable, and indestructible daily wearer.

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SKU: 4133748129

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4.6 ★★★★★
Based on 28 reviews
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Verified Purchase
Elizabeth Henderson
Massapequa, US
★★★★★ 4
Very narrow
Size: 10 Wide, Color: Cognac
Run narrow. For very narrow feet. Wide width fits like a regular width.
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Reviewed in the United States on February 9, 2026
M
Verified Purchase
Mynx
San Leandro, US
★★★★★ 5
Comfortable Shoes Right Out of the Box
Size: 9, Color: Black
I bought these shoes for my husband. He has a very hard time finding quality, comfortable shoes. These shoes are just as comfortable as his New Balance. He uses them as a dress shoe and wears them at least once a week. There was no break in period necessary. They were comfortable right out of the box! The only thing we didn't like was the white sole color. Once I knew he was going to keep them, I used a black sharpie marker to color the soles black. Instant amazing, comfortable dress shoes. They were well worth the cost. If you or your SO needs a comfortable pair of shoes, we highly recommend them.
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Reviewed in the United States on September 2, 2025
R
Verified Purchase
Rmanuel
Belleville, US
★★★★★ 1
Paid for new, received used.
Size: 9.5 Wide, Color: Cognac, Size: 9.5 Wide, Color: Cognac
Arrived dirty as if someone whore it for more than a few days. Maybe I was mistaken, but I saw nothing about “previously used” on the Amazon page. Returned it. I would suggest that the company use quality control when it comes to shipping. The shoes seem find otherwise. I ordered 9.5 and it was just a bit tight. If I reorder I will go for size 10.
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Reviewed in the United States on June 11, 2026
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Verified Purchase
Fletch
Lake Worth, US
★★★★★ 5
Overall Great.
Size: 10.5 Wide, Color: Black
Great product. Great value. Great style. Overall great.
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Reviewed in the United States on March 3, 2026
B
Verified Purchase
B.J. G
Carnegie, US
★★★★★ 3
Decent Shoes with Misleading Description (Not Leather)
Size: 12 Wide, Color: Black, Size: 12 Wide, Color: Black
I only look for leather when I’m purchasing dress shoes. Under the description “details” on this item it lists the shoe as leather upper and inner lining. A photo shows “genuine Napa leather lining”. If you keep reading (which I have now that I’ve received the shoes) it shows “faux leather” in the small print and that is not “leather”. I run a small leather business and this irks me because it’s clearly false advertising. The details also show the product is made in Brazil but when they arrived today, the shoe tag shows “Made in China” and “Man Made upper and lower”. I don’t hate the shoes. They look nice. What I know is they won’t hold up over time like leather, which is why the description should be accurate and not misleading.
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Reviewed in the United States on March 28, 2026

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