Casio G-Shock G-STEEL GM-2100M-1AER

G-SHOCK combines extreme durability and contemporary industrial design in a clean, refined monochrome aesthetic. The digital GM-5600 model with its iconic metal bezel and the analog-digital GM-2100 version reinterpret the brand's signature ruggedness with clean, functional lines, enhanced by a textured bezel finish and a red detail that recalls the legendary G-SHOCK shock-absorbing technology. Cutouts in the bezel reveal the shock-resistant internal structure, placing the technology at the center of the design. Slim, versatile, and durable, it's a watch designed to accompany you over time with style and reliability.

General Information

Structure: Shockproof
Weight: 71 g

Earnings

Dimensions (H × W × D): 49.3 × 44.4 × 11.8 mm
Case and bezel material: Resin / Stainless steel

Waterproof

Water resistance: 20 bar (200 m)

Glass

Type: Mineral glass

Strap

Material: Bio-based resin
Adjustable size: 145 – 215 mm

Diet

Battery: SR726W × 2
Estimated lifespan: Approximately 3 years

Lighting

Type: Dual LED light (Super Illuminator)

LED dial (selectable duration: 1.5 s or 3 s)

LED backlight digital display (selectable duration: 1.5 s or 3 s)
Light color: White

Main functions

International Time:

31 time zones (48 cities + UTC)

Enabling/disabling daylight saving time

Stopwatch (1/100 of a second):

00'00''00 – 59'59''99 (first 60 minutes)

1:00'00 – 23:59'59 (after 60 minutes)

Modes: Elapsed time, split time, 1st and 2nd place

Countdown Timer:

Unit: 1 second

Range: up to 24 hours

Setting: 1 second to 24 hours

Alarms and Sounds:

5 daily sound reminders

Time signal

Mute buttons

Calendar:

Full automatic until 2099

Time indication

Analogue:

2 hands (hours, minutes) + seconds with jump every 20 seconds

Day dial

Digital:

Hour, minute, second, PM, month, date

• Other features
• Neobrite (luminescence on the indexes/hands)
• Hand shift function (to avoid covering the digital display)