CASIO G-SHOCK GA-2100K-1ADR 2100 ANALOG-DIGITAL TRANSLUCENT SMOKY BLACK WATCH

The GA-2100K-1ADR is the smoky black variant of the nightlife-inspired GA-2100K — the darkest and most understated of the three K-series colourways. Translucent black resin with a matte fog finish creates a shadowy, smoke-filled quality across the bezel and band — dark enough to pass for a standard black G-Shock at a distance, but up close the translucent material reveals the Carbon Core Guard structure beneath the surface and the matte diffusion adds a textural depth that opaque black resin doesn't have. Neon accent details cut through the darkness like laser strobes in a blacked-out venue, and the newly developed piano-black glossy dial merges seamlessly with the dark translucent bezel.

Module 5611 is identical across all GA-2100K variants: analog-digital with two hands and a day sub-dial, hand shift, world time across 31 time zones (48 cities), 1/100-second stopwatch with split time, 24-hour countdown timer, five daily alarms, double LED Super Illuminator, Neobrite lume, Carbon Core Guard, and a full auto-calendar to 2099. At 48.5 × 45.4 × 11.8 mm and 51 grams. Shock resistant, 200-metre water resistant. SR726W × 2, approximately three-year battery life.

At a Glance

Why You'll Love It

• The smoky black is the stealth pick of the GA-2100K series. At a glance, it reads as a dark black G-Shock — safe, versatile, pairs with everything. But up close, the translucent matte bezel and band reveal the nightlife concept: a foggy, hazy texture that lets the Carbon Core Guard structure ghost through the surface, and neon accent details that flash like laser strobes against the dark material. It's a watch with a hidden layer — understated from a distance, detailed on close inspection.
• The piano-black glossy dial on the K-1A merges almost seamlessly with the smoky black translucent bezel — the boundary between dial and case softens into a unified dark surface, with the analog hands and neon accents floating above it. The effect is more immersive than on the blue or amber variants, where the bezel-to-dial transition is more visible. On the black, everything blends into shadow.
• The matte fog finish on the translucent black resin adds a textural quality that standard opaque black resin doesn't have. The surface diffuses light rather than reflecting it sharply, creating a soft, smoky look that changes with the lighting environment. Under direct light, the translucency is visible. In dim light, the watch darkens to near-opaque. The material responds to its environment.
• At 51 grams and 11.8 mm, it's the same ultra-light, slim GA-2100 profile as the coloured variants — comfortable for extended nightlife wear, and slim enough for daily use under a sleeve. The black colourway makes it the most versatile K-series for everyday pairing.
• Full Module 5611 functionality: hand shift, world time (48 cities), double LED Super Illuminator, five daily alarms, Carbon Core Guard, 200m water resistance. The stealth exterior hides the same full spec sheet.
• The most wearable of the three K-series colourways for daily use — smoky black pairs with any outfit, any occasion, without the colour commitment of blue or amber. The nightlife concept is present but not dominant.

Perfect For

Key Features

• Translucent smoky black — matte fog finish — Semi-transparent dark bezel and band with matte haze texture. Reads as black from a distance; reveals translucent depth and internal structure up close.
• Piano-black dial — Newly developed smooth glossy surface. Merges seamlessly with the smoky black bezel for a unified dark aesthetic.
• Neon laser-light accents — Bright neon colour details against the dark body. Maximum contrast on the darkest K-series variant.
• Ultra-light — 51 g, 11.8 mm — Carbon Core Guard resin construction. The most versatile K-series for everyday wear.
• Hand shift + Double LED Super Illuminator — Hands retract for clear digital reading. Separate LEDs for face and digital display.
• 200-metre water resistance (20 BAR) — Suitable for swimming, snorkelling, and recreational water sports.

Technical Specifications

Best Matched With

Frequently Asked Questions

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