Casio unveils Pink Ribbon G-Shock watch to help raise funds for the Breast Cancer Research Foundation

Casio and the Breast Cancer Research Foundation (BCRF) have partnered together to release the Pink Ribbon model GMAS145PK-4A G-Shock to help support breast cancer research fundraising. Casio has additionally donated $25,000 to the BCRF for its efforts.

The Pink Ribbon model is similar to the dual-tone pink GMAS140PP-4A (sold here on Amazon), except it is a single-color model with pink logos and minute markers matching the BCRF logo color, and inverted LCD displays.

A tough raised bezel helps provide shock resistance to the module, which can withstand dive depths of up to 200 meters (656 ft.). The watch can keep track of time to 1/1000th of a second in stopwatch mode. It also comes with a countdown timer, five daily alarms, 48-city world time, and auto LED amber light. The watch measures 49 × 45.9 × 15.8 mm (1.9 x 1.8 x 0.6 in.) and weighs 56 g (1.98 oz.)

The Pink Ribbon GMAS145PK-4A G-Shock watch has an MSRP of $110 and will be released on October 1, 2025. Casio has previously released two other special-edition watches in collaboration with BCRF (the DW5600PK-1 and the GMDS5610PK-4). Readers can see a selection of other pink Casio watches on Amazon.