Casio G-SHOCK G-STEEL 2100 Series – GM-2100BM-1A

The GM-2100BM-1A delivers a striking, industrial-inspired reinterpretation of the iconic 2100 silhouette. With its monochromatic, achromatic color scheme, textured metal bezel, and black ion-plated components, this model blends streamlined minimalism with G-SHOCK’s signature toughness.

Engineered for those who appreciate modern industrial aesthetics and everyday durability, the GM-2100BM-1A offers a bold, functional design that remains timeless for years to come.

Design Overview

The GM-2100BM-1A features a forged stainless steel bezel crafted with precision cuts and a textured pattern that reinforces the model’s rugged visual identity. A subtle touch of red on the function label highlights G-SHOCK’s commitment to toughness-driven design.

The bezel’s unique structure includes cut-out openings, allowing the case beneath to be visible — a deliberate design choice that showcases the shock-resistant core construction G-SHOCK is known for.

For the GM-2100BM series, black ion-plating is applied to all bezel components except the top surface, adding depth, durability, and a cohesive matte-steel aesthetic.

The result is a modern, industrial, and highly wearable timepiece that enhances the classic 2100 form with elevated materials and functional beauty.

Key Highlights

✔ Forged stainless steel bezel with industrial textured finish
✔ Black ion-plated bezel components (excluding the top surface)
✔ Monochromatic achromatic color scheme for a sleek, modern look
✔ Shock Resistant structure
✔ 200-meter water resistance
✔ Double LED (Super Illuminator)
✔ Bio-based resin band
✔ 3-year battery life (SR726W × 2)
✔ Full analog-digital functionality with signature 2100 slim profile

Features & Specifications

Basic Information

• Case Size: 49.3 × 44.4 × 11.8 mm

• Weight: 71 g

• Case / Bezel Material: Resin / Stainless steel

• Band: Bio-based resin band

• Construction: Shock Resistant

• Water Resistance: 200-meter water resistance

• Battery Life: Approx. 3 years (SR726W × 2)

Exterior

• Glass: Mineral Glass

• Surface Treatment: Black ion-plated bezel

• Other: Neobrite

• Compatible Band Size: 145–215 mm

Watch Features

World Time

• 31 time zones (48 cities + UTC)

• Daylight saving on/off

Stopwatch

• 1/100-second stopwatch

• Measuring capacity:

  • 00'00"00–59'59"99

  • 1:00'00–23:59'59

• Modes: elapsed time, split time, 1st–2nd place times

Timer

• Countdown timer

• Measuring unit: 1 second

• Range: 24 hours

• Setting range: 1 second–24 hours

Alarms

• 5 daily alarms

• Hourly time signal

Light

• Double LED Light (Super Illuminator)

  • LED for the face (1.5 or 3 sec, afterglow)

  • LED for the digital display (1.5 or 3 sec, afterglow)

• Light Color: White

Calendar & Accuracy

• Full auto-calendar (to year 2099)

• Accuracy: ±15 seconds per month

Other Functions

• 12/24-hour format

• Mute function (button tone on/off)

• Hand shift feature

• Regular timekeeping:

  • Analog: hour & minute (minute hand moves every 20 sec)

  • Digital: hour, minute, second, pm, month, date, day

Summary

The GM-2100BM-1A stands out with its industrial-modern aesthetic, textured metal surfaces, and monochromatic palette. Keeping the fan-favorite slim 2100 profile while introducing black ion-plating and a modern achromatic look, this model is a bold yet versatile upgrade to the G-SHOCK lineup.

A perfect choice for collectors, design enthusiasts, or anyone seeking a clean and functional metal-bezel G-SHOCK built for everyday toughness.

For more details, visit the official CASIO website here.

Warranty

All our G-SHOCK watches include the official manufacturer’s warranty for peace of mind and long-term protection.

▶︎Processing Time & Shipping Policy

▶︎Refund policy

▶︎We only carry G-SHOCK USA products.

▶︎Unfortunately, we DO NOT ship internationally.