---
type: product
title: G-Shock GBM-2100A-1A3ER G-Steel 2100 Series Watch
handle: g-shock-gbm-2100a-1a3er-g-steel-2100-series-watch
url: >-
  https://www.hsjohnson.com/products/g-shock-gbm-2100a-1a3er-g-steel-2100-series-watch
sku: GBM-2100A-1A3ER
price: '18900.0'
currency: GBP
tags:
  - in_stock
  - Mens
  - Womens
collections:
  - Watches
  - G-Shock
  - In Stock
  - All
  - Mens Watches
  - Womens Watches
  - OrderlyEmails - Recommended Products
variants:
  - title: Default Title
    price: '189.00'
    sku: GBM-2100A-1A3ER
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    https://cdn.shopify.com/s/files/1/0621/1164/5922/files/GBM-2100A-1A3.jpg?v=1759481978
  - >-
    https://cdn.shopify.com/s/files/1/0621/1164/5922/files/GBM-2100A-1A3_03.jpg?v=1759481979
created_at: null
updated_at: null
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---

The latest Metal Covered 2100 model features a striking forest green dial. It includes Bluetooth connectivity and Tough Solar technology. Designed with shock resistance, smartphone compatibility, dual LED illumination, and world time functionality, this watch offers reliable performance. The unique metal dial is crafted using vapor deposition, enhanced with a phosphorescent coating for improved readability in dim conditions.

**We are a Casio UK authorised dealer**  
**New boxed stock with full retail boxes & paperwork**  

**Basic Information**  
Case size (L× W× H)  
49.3 × 44.4 × 11.9 mm  
Weight  
72 g  
Case and bezel material  
Bio-based Resin / Stainless steel   
Band  
Bio-based resin band  
Construction  
Shock Resistant  
Water resistance  
200-metre water resistance  
Time adjustment  
Bluetooth: Connects to a smartphone and automatically adjusts the time  
Power supply and battery life  
Tough Solar (Solar powered)  
Country of origin  
China  
**Smartphone Link/App Connectivity Features**  
Smartphone Link feature  
Mobile link (Wireless linking using Bluetooth®)  
Apps  
CASIO WATCHES  
App connectivity feature  
Auto time adjustment  
Easy watch setting  
Approximately 300 world time cities  
Time & place  
Reminder  
Phone finder  
**Exterior**  
Glass  
Mineral Glass  
Compatible band size  
145 to 215 mm  
Other  
Neobrite  
**Watch Features**  
World time  
World time   
38 time zones (38 cities + coordinated universal time), auto summer time (DST) switching, home city/world time city swapping  
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, lap/split time  
Timer  
Countdown timer  
Measuring unit: 1 second  
Countdown range: 60 minutes  
Countdown start time setting range: 1 second to 60 minutes (1-second increments and 1-minute increments)  
Alarm/hourly time signal  
5 daily alarms  
Hourly time signal  
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)  
Light color  
LED: White  
Calendar  
Full auto-calendar (to year 2099)  
Mute feature  
Button operation tone on/off  
Energy saving feature  
Power Saving (display goes blank to save power when the watch is left in the dark)  
Battery display/alert  
Battery level indicator  
Run time  
Approx. battery operating time:  
7 months on rechargeable battery (operation period with normal use without exposure to light after charge)  
18 months on rechargeable battery (operation period when stored in total darkness with the power save function on after full charge)  
Accuracy  
Accuracy: ±15 seconds per month (with no mobile link function)  
Other features  
Hand shift feature (Hands move out of the way to provide an unobstructed view of digital display contents.)  
12/24-hour format  
Date/month display swapping  
Day display (days of the week selectable in six languages)  
Regular timekeeping:  
Analog: 2 hands (hour, minute (hand moves every 20 seconds)), 1 dial (battery level, mode)  
Digital: Hour, minute, second, pm, month, date, day