Quartz, mineral glass, 49.3mm steel case— 20-bar rated. Green mix-dial multifunction, metal-covered and resin-strapped for a sharp streetwear edge.
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G-Shock Oak Metal Covered — Quartz Multifunction Men's Watch 49.3 x 44.4 mm
Oak Collection • Ref. GM-2100B-3AER
Bold, resilient, and unmistakably G-Shock — the GM-2100B-3AER fuses the legendary toughness of the Casio G-Shock line with a refined stainless steel metal bezel that elevates it far beyond a standard sports watch. The deep green dial gives it a distinctive, modern edge while staying true to the spirit of the Oak collection.
With its 49.3 x 44.4 mm case and 20-bar water resistance, this is a watch built for those who demand absolute reliability in any environment — without sacrificing style. It is the rare piece that transitions seamlessly from a construction site to a cocktail bar.
Reference: GM-2100B-3AER • Collection: Oak
Why this watch stands apart
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● Metal Covered Case The stainless steel metal bezel of the GM-2100B-3AER is what sets the Oak series apart from the standard G-Shock lineup. It brings a premium, jewellery-like finish to a watch built for extreme conditions — a combination that makes it instantly covetable for both collectors and daily wearers. |
● 20-Bar Water Resistance Rated to 20 bar (200 m), this G-Shock laughs at rain, surf, and submersion. Whether you are swimming, diving recreationally, or simply caught in a downpour, the GM-2100B-3AER performs without compromise — a true 24/7 companion on land and in water. |
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● Quartz Multifunction Movement Powered by a precise quartz movement, the GM-2100B-3AER packs a full suite of multifunction features — stopwatch, countdown timer, world time, alarms and more — into a mix analog/digital dial that is as practical as it is visually striking. Precision you can rely on, every single day. |
● Resin Strap & Comfort Fit The high-quality resin strap is soft on the skin, lightweight and virtually indestructible. Paired with a 16 mm lug width, it sits close and secure without pinching — the kind of ergonomic fit that makes you forget you are wearing a watch, until someone asks you about it. |
Design that commands attention
The GM-2100B-3AER green dial is a bold design statement. Rich and deep, the colour brings a military-inspired aesthetic that resonates with watch enthusiasts drawn to pieces that say something. The mix dial — combining analog hands with a digital display — adds a layer of visual complexity that makes this watch endlessly interesting on the wrist.
At 49.3 x 44.4 mm, the case commands the wrist with authority. The octagonal shape, a nod to the iconic CasiOak silhouette, gives it an architectural quality rarely seen at this price point — sharp angles, strong lines, and a profile that photographs as well as it wears.
A collector’s piece at an accessible price
The Oak series has become one of the most sought-after lines in the G-Shock universe, driven by a community of collectors who recognise the rare value of a watch that combines street credibility, horological substance, and genuine toughness. The GM-2100B-3AER green colourway is a limited expression that adds scarcity to the equation — a compelling reason to act rather than wait.
From an economic standpoint, Casio’s quartz reliability means virtually zero servicing costs over decades of use. The mineral crystal glass and resin strap are engineered to withstand daily punishment, and the G-Shock guarantee backs every component. This is outstanding value for a watch that punches well above its weight class.
Oak Collection — G-Shock by Casio
Whether you are building a serious G-Shock collection or simply choosing a watch tough enough to keep up with your life, the GM-2100B-3AER delivers on every level: the innovation of a metal-covered case, the comfort of a proven resin strap, the reassurance of 20-bar water resistance, and a green dial that turns heads every time. It is a watch built without compromise — and worn the same way.
G-Shock GM-2100B-3AER• Oak Metal Covered • Quartz Multifunction • Mineral Crystal • 20 Bar • 49.3 x 44.4 mm • Green Dial
Ref. GM-2100B-3AER
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