CASIO
G-SHOCK GMAP2100ST-4A
G-SHOCK GMAP2100ST-4A
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Casio G-SHOCK – Model GMAP2100ST-4A
Metallic Pink with Iconic G-SHOCK Toughness
The GMAP2100ST-4A stands out with its metallic-pink sheen, offering a smooth, lustrous finish on both bezel and dial. Built on the renowned 2100 Series platform, this model delivers a perfect balance of eye-catching style and proven G-SHOCK performance.
Design Overview
The octagonal bezel and minimalist analog-digital layout pay homage to the design DNA of the GA2100 series, while the compact dimensions make it exceptionally comfortable for daily wear. The pearlescent polarized coatings on the bio-based resin bezel and band create a sophisticated, shimmering look that changes subtly in the light.
Weighing only 40 g and measuring just 11.2 mm thick, the GMAP2100ST-4A is designed for all-day comfort without sacrificing durability. Its shock-resistant construction and 200-meter water resistance ensure it’s ready for everything from urban settings to outdoor adventures.
Key Highlights
✔ Metallic-pink finish with pearlescent polarized coating
✔ Compact, lightweight design at just 40 g
✔ Shock-resistant structure and 200-meter water resistance
✔ Eco-conscious bio-based resin bezel and band
✔ Analog-digital combination for versatile timekeeping
✔ Comprehensive timing functions including world time, stopwatch, and countdown timer
Features & Specifications
Case & Band
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Size: 46 × 40.2 × 11.2 mm
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Material: Resin / Bio-based resin (case & bezel)
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Band: Bio-based resin band
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Weight: 40 g
Exterior
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Glass: Mineral Glass
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Other: Neobrite
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Compatible Band Size: 145–190 mm
Water Resistance
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200-meter water resistance
Timekeeping & Functions
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World Time: 31 time zones (48 cities + UTC), daylight saving on/off
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Stopwatch: 1/100-second (first 60 minutes), 1-second (after 60 minutes), elapsed time, split time, 1st–2nd place times
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Countdown Timer: 1-second to 24-hour range, 1-second increments, auto-repeat
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Alarms: 5 daily alarms + hourly time signal
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Calendar: Full auto-calendar (to year 2099)
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Accuracy: ±15 seconds per month
Lighting
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Double LED Light: Super Illuminator for face + LED backlight for digital display
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Light Color: White
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Selectable illumination: 1.5 or 3 seconds
Battery & Power
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Power Source: CR1025 battery
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Battery Life: Approx. 3 years
Other Features
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12/24-hour format
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Hand shift feature for unobstructed display view
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Regular timekeeping: Analog (hour, minute), Digital (hour, minute, second, pm, month, date, day)
Summary
The Casio G-SHOCK GMAP2100ST-4A delivers a bold metallic-pink aesthetic wrapped in a slim, lightweight profile. With eco-conscious materials, versatile functions, and the legendary durability of G-SHOCK, it’s a statement piece built to perform in any setting.
For more details, visit the official CASIO website here.
Warranty:
- The watch is covered by a warranty, providing assurance and protection for your purchase.
▶︎Processing Time & Shipping Policy
▶︎Refund policy
▶︎We only carry G-SHOCK USA products.
▶︎Unfortunately, we DO NOT ship internationally.
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Explore Your Favorite G-SHOCK Watches
Explore our current selection of G-SHOCK watches. If you don’t see your preferred model, check the G-SHOCK USA website, note the model number, and contact us via email or phone(415-567-2400) to place your order. Ask about our special deals!
Please note:
- We only carry G-SHOCK USA products.
- Unfortunately, we DO NOT ship internationally.

Trusted Since 1967
Our owner, Asuka Saito, is certified by both Gemological Institute of America (GIA) and Cultured Pearl Association of America (CPAA), and we also have a GIA-certified appraiser on staff. Asuka is also a color specialist, certified as a TC Color Therapist and Sensational Color.