Casio GM-2100RW-1AJF Men's Rainbow Metal Cover Watch with Biomass Plastic Band
The Casio G-SHOCK GM-2100RW-1AJF brings a dynamic splash of color to an iconic octagonal silhouette. Featuring a sleek metal bezel paired with a biomass plastic band, this watch showcases a rainbow brick pattern across its dial. The eye-catching look is created using laser processing over silver vapor deposition, letting the face reveal a shifting spectrum of color depending on your viewing angle.
G-SHOCK has continuously redefined tough timepieces since the debut of its original model in 1983. This release honors that legacy, reimagining the classic brick pattern from G-SHOCK's earliest designs with a modern, fashion-forward twist. The octagonal 2100 series geometry gives it a clean aesthetic while incorporating bio-based materials for a forward-thinking design.
Engineered for daily wear, this watch features shock-resistant construction and 20 ATM water resistance. Practical functions include world time across 48 cities, a 1/100-second stopwatch, a 24-hour timer, five daily alarms, and a hand shift feature that temporarily clears the hands away from the digital display. A double LED Super Illuminator keeps the dial visible in the dark, backed by an approximate three-year battery life.
Casio G-SHOCK GM-2100RW-1AJF, a shock-resistant analog-digital watch with an octagonal metal bezel and a rainbow brick-pattern design. The glass and dial feature rainbow vapor-deposition finishing, with silver vapor deposition partially removed by laser processing. Its special glass changes appearance depending on the viewing angle.
Features 20 bar water resistance, world time for 48 cities across 31 time zones plus UTC, 1/100-second stopwatch, 24-hour countdown timer, five alarms, hourly time signal, fully automatic calendar, 12/24-hour display, button-tone on/off setting, and hand shift function. Double LED illumination includes a dial light and LCD backlight with Super Illuminator and selectable 1.5- or 3-second afterglow.
Approximate battery life is 3 years. Actual color tones may differ from published images.




