G-SHOCK GA-2100K-5AER

Inspired by the music-driven nightlife, the GA-2100K-5A captures the smoky atmosphere of late-night venues and festival stages. A newly developed surface finish gives the dial a clean, modern look that complements the streamlined GA-2100 silhouette. The smooth surface serves as the ideal canvas for a glossy finish and warm earthy tones, projecting the depth of piano black. Neon-colored accents glow like laser strobes piercing through darkness, while translucent materials with a matte finish on the bezel and band evoke the haze of a fog machine drifting across the dance floor.

Underneath, the proven GA-2100 platform delivers G-SHOCK’s signature toughness through its Carbon Core Guard structure — all in a slim 11.8mm case at just 51g. The octagonal bezel honors the original DW-5000C heritage, and 200-meter water resistance handles any environment. Features include a 1/100-second chronograph, world time across 48 cities, countdown timer, five daily alarms, and a Double LED Super Illuminator for low-light readability.

Basic Information

Case Size (L× W× H): 48.5 × 45.4 × 11.8 mm
Weight: 51g
Case and Bezel Material: Carbon / Resin
Band: Resin Band
Construction: Shock Resistant, Carbon Core Guard structure
Water Resistance: 200-meter water resistance
Power Supply: Approx. battery life: 3 years on SR726W × 2

Exterior

Glass: Mineral Glass
Compatible Band Size: 145 to 215 mm
Other: Neobrite

Watch Features

World Time: 31 time zones (48 cities + coordinated universal time), daylight saving on/off
Stopwatch: 1/100-second stopwatch
Timer: Countdown timer (1 second to 24 hours)
Alarm: 5 daily alarms, Hourly time signal
Light: Double LED light (Super Illuminator)
Light Color: LED: White
Calendar: Full auto-calendar (to year 2099)
Accuracy: ±15 seconds per month
Other Features:
12/24-hour format
Hand shift feature
Button operation tone on/off