Casio G-Shock Classic Watch GA-2100RC-1AER

Introducing the Casio G-Shock GA-2100RC-1AER, a vibrant interpretation of the legendary GA-2100 that captivates with its unique color palette. The octagonal matte black resin case serves as a canvas for striking mint green luminous rectangular indices, creating a spectacular visual contrast. The analog hands also adopt this distinctive mint tone, while a small digital display at 3 o'clock shows complementary information. The result is a watch that maintains the stealth elegance of the original design but adds an unmistakable chromatic personality.

At its heart beats the proven Casio module 5611, an analog-digital caliber that manages the three main hands for hours, minutes, and seconds, plus a compact LCD display. This display shows day of the week, full date, and second time zone. Among its functions are world time with 31 time zones, 1/100-second stopwatch with capacity up to 24 hours, countdown timer, five independent daily alarms, hourly signal, and automatic calendar until 2099. Super Illuminator LED lighting ensures perfect nighttime legibility of both hands and indices.

G-Shock was born in 1983 from engineer Kikuo Ibe's dream of creating a watch that would never break. After more than 200 prototypes and drop tests from 10 meters, a legend was born that has withstood the planet's most extreme environments. The GA-2100 series represents the most sophisticated evolution of this philosophy, combining Carbon Core Guard structure with an octagonal design of eight flat facets adapted to Casio's indestructible DNA.

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Technical Specifications

Reference: GA-2100RC-1AER
Module/Caliber: 5611
Type: Analog-Digital
Movement: Quartz
Water resistance: 200 meters (20 ATM)
Shock resistance: Yes, Carbon Core Guard structure
Case material: Resin
Case color: Matte black
Strap material: Resin
Strap color: Black
Dial color: Black with mint green indices
Crystal: Mineral
Light: Super Illuminator LED
Diameter: 45.4 x 48.5 mm
Thickness: 11.8 mm
Weight: 51.0 grams
Functions: World time (31 zones), 1/100 sec stopwatch, countdown, 5 alarms, auto calendar, hourly signal
Battery: SR726W x 2 (approx. 3 years)
Made for: Men

User manual

Download the manual in English (PDF)