Casio G-Shock Classic Watch GM-2100RW-1AER

Introducing the Casio G-Shock GM-2100RW-1AER, a sophisticated interpretation of the legendary GA-2100 that stands out for its striking bicolor contrast. The octagonal resin case features a bright metallic silver finish framing a deep black dial with electric blue details. Silver hands contrast against white indices, while the small digital display at 3 o'clock shows complementary information. The textured black resin strap completes this chromatic combination with great personality.

At its heart beats the Casio 5611 module, an analog-digital caliber offering three main hands reading complemented by digital display. This system allows world time consultation with 31 time zones, 1/100 second stopwatch with 24-hour capacity, countdown timer, 5 independent daily alarms, and automatic calendar until 2099. The dial clearly shows stopwatch and world time functions, while double-flash LED illumination facilitates night reading.

G-Shock was born in 1983 from engineer Kikuo Ibe's dream of creating an unbreakable watch. After more than 200 prototypes and drop tests from 10 meters high, he achieved the triple protection structure that defines the legendary resistance of these watches. The GA-2100 series, with its flat octagonal bezel and integrated strap, represents the most stylized evolution of this extreme resistance philosophy.

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Technical Specifications

Reference: GM-2100RW-1AER
Module/Caliber: 5611
Type: Analog-digital
Movement: Quartz
Water resistance: 200 meters
Shock resistance: Carbon Core Guard structure
Case material: Resin
Case color: Metallic silver
Strap material: Resin
Strap color: Black
Dial color: Black with blue details
Crystal: Mineral
Light: Double-flash LED
Diameter: 44.4 mm
Thickness: 11.8 mm
Weight: 72.0 g
Functions: World time, 1/100s stopwatch, timer, 5 alarms, auto calendar
Battery: SR726W x 2
Made for: Men

User manual

Download the manual in English (PDF)