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Casio is bringing a new G-Shock watch to the US market later this month. The GMAS2100PR-4A, which made its European debut last month, will launch stateside for $110. The special-edition model supports breast cancer awareness, with its release timed to coincide with Breast Cancer Awareness Month this October.

Casio G-Shock GMAS2100PR-4A

Design Details

The GMAS2100PR-4A is Casio’s fourth G-Shock model tied to a pink ribbon campaign. It features an all-pink look, with a soft pastel shade covering the case, dial, and band. The campaign theme is reflected in a small pink ribbon-shaped indicator on the inset dial at 9 o’clock. Casio says the watch is part of its continued support for medical organizations and initiatives that encourage the early detection and treatment of breast cancer.

Hardware-wise, the watch is based on the existing GMA-S2100 series, which is a slightly smaller analog-digital model within the broader G-Shock lineup. The case measures 46.2 x 42.9 x 11.2 mm and weighs 41 grams.

Casio G-Shock GMAS2100PR-4A

For the build materials, Casio is using bio-based resin for the key components of the bezel and the band. The internal module is protected by Casio’s Carbon Core Guard structure to maintain the brand’s standard shock resistance.

In terms of functionality, the watch comes with the usual mix of analog and digital features found across modern G-Shock models. It offers 200 meters of water resistance, a mineral glass crystal, and Neobrite-coated analog hands for better visibility in low light.

Where to buyCasio G-Shock GMAS2100PR-4ALatest price on AmazonCheck price →

Additionally, it features world time across 31 time zones and 48 cities, a 1/100-second stopwatch, a 24-hour countdown timer, and five daily alarms. There is also a hand-shift function that moves the analog hands away from the digital display when needed. For nighttime visibility, Casio has equipped the watch with a double LED light that illuminates both the dial and digital display.

Casio G-Shock GMAS2100PR-4A

The watch runs on two SR726W batteries, which provide an estimated battery life of three years. When it goes on sale, the GMAS2100PR-4A will ship in special packaging designed specifically for the 2026 pink ribbon initiative.

In related news, Casio has launched three affordable FB100W watches in the US with Bluetooth connectivity and step tracking, alongside two compact GMA-P2110B G-Shock models.

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(Casio)

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