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G-SHOCK

GM2100B-4A

Archive model

This product is no longer available for purchase.

Go sleek, sharp and bold with a G-SHOCK standard-bearer in a metal-clad octagonal take on the original iconic design.

Forged in stainless steel with rounded hairline finish, the strong bezel says super style all the way. The dial is treated with vapour deposition finish for a meticulously detailed metallic look that suits a classic metal G-SHOCK timepiece. Incremental variations in the detailed square dot texturing on the wristband take casual urethane materials up a notch.

Choose your statement in silver, blue, grey, or grey and red.

Basic Information
  • Case and bezel material
    Resin, Stainless Steel
  • Construction
    Shock Resistant, Carbon Core Guard structure
  • Power supply and battery life
    Approx. battery life: 3 years on SR726W X 2, Approx. battery life: 3 years on CR1025
  • Water resistance
    200-metre water resistance

Exterior
  • Glass
    Mineral Glass

Features
  • Accuracy
    Accuracy: ±15 seconds per month
  • Alarm / hourly time signal
    5 daily alarms
    Hourly time signal
  • Calendar
    Full auto-calendar (to year 2099)
  • Light
    Double LED light
    LED light for the face (Super illuminator, selectable illumination duration (1.5 seconds or 3 seconds), afterglow)
    LED backlight for the digital display (Super illuminator, selectable illumination duration (1.5 seconds or 3 seconds), afterglow)
  • Mute feature
    Button operation tone on/off
  • Other features
    12/24-hour format
    Hand shift feature (Hands move out of the way to provide an unobstructed view of digital display contents.)
    Regular timekeeping:
    Analog: 2 hands (hour, minute (hand moves every 20 seconds)), 1 dial (day)
    Digital: Hour, minute, second, pm, month, date
    Analog: 2 hands (hour, minute (hand moves every 20 seconds))
    Digital: Hour, minute, second, pm, month, date, day
  • Stopwatch
    1/100-second stopwatch
    Measuring capacity:
    00'00''00~59'59''99 (for the first 60 minutes)
    1:00'00~23:59'59 (after 60 minutes)
    Measuring unit:
    1/100 second (for the first 60 minutes)
    1 second (after 60 minutes)
    Measuring modes: Elapsed time, split time, 1st-2nd place times
    Measuring capacity: 00'00''00~59'59''99 (for the first 60 minutes)
    Measuring unit: 1/100 second (for the first 60 minutes)
  • Timer
    Countdown timer
    Measuring unit: 1 second
    Countdown range: 24 hours
    Countdown start time setting range: 1 second to 24 hours (1-second increments, 1-minute increments and 1-hour increments)
  • World time
    World time
    31 time zones (48 cities + coordinated universal time), daylight saving on/off
User Manual – Module 5611

Minimalist beauty of form: Wafer-thin design

We achieved shock resistance with the bare minimum case thickness by adopting a metal-clad shock-resistant structure. Optimised, high-density mounting of the circuit board structure made it possible to slim the module even further. The result is an exceptionally slim design for an analogue-digital combination model with a metal case and a comfortable fit on the wrist.

Ever evolving toughness: Metal-clad shock-resistant structure

A stainless steel bezel with exceptional strength and inner case made of damage- and deformation-resistant glass fibre-reinforced resin safeguards the module. Tiny protrusions on the inner case reduce surface contact with the bezel to cushion shocks to the module. Cutting-edge technology is applied to the original G-SHOCK concept of hollow construction to deliver a shock-resistant structure with a metal exterior.

IP colours with individual character

The watch is offered in a choice of three colours: silver, which accentuates the hard texture of the metal (GM2100), along with dark blue IP (GM2100N) and dark grey IP (GM2100B) options. These classy colours elevate the watch to true fashion item status.

Casual flair: Textured band

The watch's urethane band employs a minutely detailed square dot texture. Sophisticated moulding technology was used to achieve textural intricacy with incremental variations in dot size. A slide lever makes it easy to attach and remove the band.

Meticulous detail: Dial with metallic vapour deposition

Mirror and hairline finishes are applied to the surface of the dial to achieve texture fitting for a metal model dedicated to maintaining a meticulous level of attention to detail.

Feature List

  • Black icon of a person snorkeling with the number 20, representing a 20-bar pressure rating for water resistance.

    20 bar water resistant

  • Minimalist black and white icon of a person checking a glowing watch under a crescent moon at night.

    Easy to see in darkness

  • Minimalist wristwatch icon with a polished metallic finish and sparkling accents on a white background.

    Beautiful polished metal

  • Minimalist black and white icon of a wristwatch face featuring the word CASUAL in bold, centered sans-serif text.

    Casual design

  • Black icon of a watch hitting a flat surface with motion lines indicating a shock or impact.

    Shock resistant

Shop G-SHOCK GM-2100

Compare models

Compare key specifications across models in this collection.

gm2100-1a-g-shock-162311
GM2100-1A
View details
G-SHOCK-GM2100B-3A-CASIO Australia
GM2100B-3A
View details
G-SHOCK-GM2100N-2A-CASIO Australia
GM2100N-2A
View details
G-SHOCK-GM2100B-4A-CASIO Australia
GM2100B-4A
View details
Price
Price
$382.00 $449.00
$399.00 $469.00
$382.00 $449.00
$569.00
Case size (L × W × H)
Case size (L × W × H)
49.3 × 44.4 × 11.8 mm
49.3 × 44.4 × 11.8 mm
49.3 × 44.4 × 11.8 mm
—
Weight
Weight
72 g
72 g
72 g
—
Water resistance
Water resistance
200-metre water resistance
200-metre water resistance
200-metre water resistance
200-metre water resistance
Band
Band
Resin Band
Resin Band
Resin Band
—
Glass
Glass
Mineral Glass
Mineral Glass
Mineral Glass
Mineral Glass
Power supply and battery life
Power supply and battery life
Approx. battery life: 3 years on SR726W X 2, Approx. battery life: 3 years on CR1025
Approx. battery life: 3 years on SR726W X 2, Approx. battery life: 3 years on CR1025
Approx. battery life: 3 years on SR726W X 2, Approx. battery life: 3 years on CR1025
Approx. battery life: 3 years on SR726W X 2, Approx. battery life: 3 years on CR1025
Accuracy
Accuracy
Accuracy: ±15 seconds per month
Accuracy: ±15 seconds per month
Accuracy: ±15 seconds per month
Accuracy: ±15 seconds per month
World time
World time
World time
31 time zones (48 cities + coordinated universal time), daylight saving on/off
World time
31 time zones (48 cities + coordinated universal time), daylight saving on/off
World time
31 time zones (48 cities + coordinated universal time), daylight saving on/off
World time
31 time zones (48 cities + coordinated universal time), daylight saving on/off
Stopwatch
Stopwatch
1/100-second stopwatch
Measuring capacity:
00'00''00~59'59''99 (for the first 60 minutes)
1:00'00~23:59'59 (after 60 minutes)
Measuring unit:
1/100 second (for the first 60 minutes)
1 second (after 60 minutes)
Measuring modes: Elapsed time, split time, 1st-2nd place times
Measuring capacity: 00'00''00~59'59''99 (for the first 60 minutes)
Measuring unit: 1/100 second (for the first 60 minutes)
1/100-second stopwatch
Measuring capacity:
00'00''00~59'59''99 (for the first 60 minutes)
1:00'00~23:59'59 (after 60 minutes)
Measuring unit:
1/100 second (for the first 60 minutes)
1 second (after 60 minutes)
Measuring modes: Elapsed time, split time, 1st-2nd place times
Measuring capacity: 00'00''00~59'59''99 (for the first 60 minutes)
Measuring unit: 1/100 second (for the first 60 minutes)
1/100-second stopwatch
Measuring capacity:
00'00''00~59'59''99 (for the first 60 minutes)
1:00'00~23:59'59 (after 60 minutes)
Measuring unit:
1/100 second (for the first 60 minutes)
1 second (after 60 minutes)
Measuring modes: Elapsed time, split time, 1st-2nd place times
Measuring capacity: 00'00''00~59'59''99 (for the first 60 minutes)
Measuring unit: 1/100 second (for the first 60 minutes)
1/100-second stopwatch
Measuring capacity:
00'00''00~59'59''99 (for the first 60 minutes)
1:00'00~23:59'59 (after 60 minutes)
Measuring unit:
1/100 second (for the first 60 minutes)
1 second (after 60 minutes)
Measuring modes: Elapsed time, split time, 1st-2nd place times
Measuring capacity: 00'00''00~59'59''99 (for the first 60 minutes)
Measuring unit: 1/100 second (for the first 60 minutes)
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