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Casio G-Shock GMA-P2100C: New affordable watches with polarized dials now available to buy

The Casio G-Shock GMA-P2100PC-1AJF (pictured) is more of a unisex watch, even though it's being marketed as a women-only model. (Image source: Casio)
The Casio G-Shock GMA-P2100PC-1AJF (pictured) is more of a unisex watch, even though it's being marketed as a women-only model. (Image source: Casio)
Casio's new GMA-P2100PC watches are now available to buy in Japan. They come with a compact size, polarized dials, and the standard G-Shock feature set. All 3 models are priced at ¥18,700 (~$127).

A few weeks after their official reveal, Casio has now started selling its latest GMA-P2100PC watches in Japan. It's a set of three pastel-accented models, and if compact G-Shocks are your thing, this lineup should appeal to you.

The new models - GMA-P2100PC-1AJF, -4AJF, and -7AJF - stick to the same downsized 2100 format we’ve seen before. But what makes these unique is the use of a polarized dial that shifts color depending on the angle of light, paired with a glossy index finish. That’s where the 'PC' in the name comes from - short for "polarized color." The theme seems to revolve around sunlight reflecting off the sea.

Build-wise, nothing too surprising here. All three use a matte-finish bio-resin for the case and strap, measure 46mm tall and just over 11mm thick, and weigh only 40g. They’ve got 20-bar water resistance, a three-year battery, LED lighting for both the dial and LCD, and the usual 2100-series functions: world time, stopwatch, timer, alarms, full auto-calendar, and so on. No Bluetooth or solar charging, but that’s expected for the price point.

The -1AJF (black) is probably the easiest pick if you're after a versatile everyday watch, while the -4AJF (beige) and -7AJF (white) have more of a seasonal, beach-y aesthetic. While the three new watches are listed under Casio’s women’s category, their neutral color schemes and clean design make them a solid unisex choice.

Each one is priced at ¥18,700 (~$127) in Japan. They're already available through Casio Japan's online store, and you can expect third-party sites to start listing them soon if they haven't already. A US launch should be on its way as well.

Buy the Casio G-Shock GA2100-1A1 on Amazon.

From top to bottom: Casio G-Shock GMA-P2100PC-7A, GMA-P2100PC-1A, and GMA-P2100PC-4A. (Image source: Casio)
From top to bottom: Casio G-Shock GMA-P2100PC-7A, GMA-P2100PC-1A, and GMA-P2100PC-4A. (Image source: Casio)

Source(s)

Casio Japan (1) (2) (3)

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> Expert Reviews and News on Laptops, Smartphones and Tech Innovations > News > News Archive > Newsarchive 2025 07 > Casio G-Shock GMA-P2100C: New affordable watches with polarized dials now available to buy
Anubhav Sharma, 2025-07-11 (Update: 2025-07-11)