G-SHOCK

GA2100HD-8A

Archive model

This product is no longer available for purchase.

Unlock your full potential, and bring what’s hidden to the fore. Introducing the G-SHOCK that glows in the dark.

This line features luminescent parts set against a dark grey base — a design inspired by the hidden talents we each have, but rarely reveal.

We start with a base of grey to evoke the dark, then add luminescent components and white accents to the face, creating a monochromatic watch with an extra special glow.

Search out a dark space and watch this cool design come to life in glowing luminescence.

Basic Information
  • Band
    Bio-based resin band
  • Case and bezel material
    Carbon / Bio-based resin
  • Case size (L × W × H)
    48.5 × 45.4 × 11.8 mm
  • 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
  • Weight
    51 g

Exterior
  • Compatible band size
    145 to 215 mm
  • Glass
    Mineral Glass
  • Other
    Neobrite

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

Reveal the Hidden Glow – G-SHOCK Glow-in-the-Dark Collection

Commanding style in the dark is often difficult but not for the Hidden Glow collection of G-SHOCK watches. The matte gray of the GA700HD-8A, the GA2100HD-8A, and the DW6900HD-8 fades out of sight in the dark to underscore the luminescent glow-in-the-dark components of the dial. For top performance in the dark, all three watches have an iteration of our Super Illuminator LED light, providing a further boost for readability.

Express what’s hidden. The Hidden Glow collection by G-SHOCK.

Glowing faces express personality
with colour and light

Matte grey bezels and bands meet white faces and black inverted LED displays in a monochromatic worldview built with neutral shades. All or part of each dial incorporates resin parts imbued with phosphorescent material, providing a green glow in darkness that reveals each model’s distinctive face design in silhouette.

Attention to materials: Bio-based resin

Key resin components used in the bezel and band are made with bio-based resin. Produced using renewable organic resources, this material is expected to help reduce environmental impact.

*GA2100HD only.
*Graphic is included for illustrative purposes.
*The colour tone of the listed products may differ from the actual product in some cases.

LED light for maintaining watch readability in the dark

DW6900HD: LCD (Super Illuminator)
GA110HD: Dial
GA2100HD, GA2000HD: Dial and LCD (Super Illuminator)
GA700HD: Dial (Super Illuminator)
*Image shows the GA2100HD-8A.

Shop G-SHOCK HIDDEN GLOW

Compare models

Compare key specifications across models in this collection.

G-SHOCK-DW6900HD-8D-CASIO Australia
DW6900HD-8D
View details
G-SHOCK-GA700HD-8A-CASIO Australia
GA700HD-8A
View details
G-SHOCK-GA2100HD-8A-CASIO Australia
GA2100HD-8A
View details
Price
Price
$259.00
$299.00
$279.00
Case size (L × W × H)
Case size (L × W × H)
53.2 × 50 × 18.7 mm
57.5 × 53.4 × 18.5 mm
48.5 × 45.4 × 11.8 mm
Weight
Weight
72 g
75 g
51 g
Water resistance
Water resistance
200-metre water resistance
200-metre water resistance
200-metre water resistance
Band
Band
Resin Band
Resin Band
Bio-based resin band
Glass
Glass
Mineral Glass
Mineral Glass
Mineral Glass
Power supply and battery life
Power supply and battery life
Approx. battery life: 5 years on CR2016
Approx. battery life: 5 years on CR2016
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
World time
World time
—
World time
31 time zones (48 cities + coordinated universal time), daylight saving on/off, Home city/World time city swapping
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
1/100-second stopwatch
Measuring capacity: 23:59'59.99''
Measuring modes: Elapsed time, split time, 1st-2nd place times
Others: target time alarm, direct timing start from the timekeeping mode
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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