Your shopping basket is empty.

If you have tried to add something to your basket but it is still empty, you may be using a browser without cookies enabled. For information on our cookie policy please click here. Please note the contents of your shopping basket will only be saved for a short period of time after you leave our website.

If you would like further assistance or would like to place your order by telephone contact our customer service team.

0
Your Basket
9 WARWICK ROAD, KENILWORTH CV8 1HD, United Kingdom
01926 298499
MON - SAT / 9AM - 5PM
Order before 4pm Monday 23rd December, for pre-Christmas delivery*
*In-stock items with next day delivery & UK mainland deliveries, full delivery info
<
>
Casio

Casio G-Steel Luxury Military | Black Resin Strap | Black Dial | Bluetooth

GST-B100GA-1AER

Seen this product cheaper elsewhere?
Send us a price match request
Unfortunately this item is not currently available to buy.

This item may have been discontinued by the manufacturer or is not currently available to order.

Click here to see the current range of Casio Watches
  • Product Description
    Product Specifications

    Casio is an electronics manufacturing company that was founded in 1946 by Tadao Kashio. The brand has a versatile portfolio, from musical instruments and digital cameras to analogue and digital watches. The company rose to popularity quickly after releasing its first-ever product, a cigarette holder, which proved to be a huge success. Casio became involved in electronics in 1954 when they released Japan's first electro-mechanical calculator. 

    During the “Quartz Revolution” in the 1970s, Casio expanded and became one of the first brands to create quartz watches which solidified the brand as an innovator in horological society. The brand’s timepieces are affordable and long-wearing, making them a favourite to both enthusiasts and everyday people. With the large variety of wristwatches and their commitment to progress, it is no surprise Casio has remained amongst the giants in the industry. 

    Core Features of the Casio G-Shock G-Steel:

    • G-Shock watches are water-resistant over 10 bars or 100 meters.
    • The hands and the indices of the models are luminescent with Neobrite coating.
    • Incredibly durable, the watch is shock-resistant, vibration resistant and centrifugal force resistant.
    • Casio’s G-Shock G-Steel can be paired with a smartphone.

    Model Specifications: GST-B100GA-1AER

    • The 53.8 mm case of the watch is made of resin. The bezel of the model is made of black plated stainless steel.
    • A black resin strap secures the watch.
    • The complicated dial gives the watch its distinctive utilitarian appearance. The dial features rose-gold detailing. 
    • A hard glass mineral crystal encases the dial.
    • Amongst the many functions featured on the watch are alarms, a calendar, a charge level indicator, an LED backlight, a stopwatch function alongside a dual time function and a world timer. 
    • The watch's crown has a lock function to ensure the model's water resistance. 
    • The watch is solar-powered.
    As an authorised dealer of Casio all our products are complete with:
    • Casio 2 Year Guarantee
      fully stamped (where appropriate)
    • Instruction manual
      Please note some brands use online manuals
    • Official Packaging
      Official Casio packaging
    Protected by Copyscape Online Plagiarism Test
    Product Specifications
    • Gender
      Men's Watches
    • Movement & Power
      Solar Powered Quartz
    • Features
      Perpetual Calendar, World Timer, Shock Resistant, Display Backlight, Day Display, Date Display, Countdown Timer, Bluetooth, Alarm
    • Strap Material
      Plastic
    • Case Material
      Plastic (Metal Caseback)
    • Display Type
      Analog
    • Dial Colour
      Black
    • Strap Colour
      Black
    • Case Width
      53.8 mm
    • Case Depth
      14.1 mm
    • Clasp Type
      Standard Buckle
    • Crown Type
      Standard
    • Dial Shape
      Circle
    • Hour Markers
      Batons
    • Water Resistance
      200 metres
  • Delivery & Returns
    Free delivery is available on all UK orders - click for information about delivery methods & international pricing
    For items listed as in stock, your order should be completed before 4:00pm (Monday-Friday) for us to despatch the same day or before 11:30am on Saturday for delivery Monday. Please note that all orders must pass our security policy before they are despatched and we must be able to take payment successfully, if this is not possible we will email or send an SMS with further instructions. For queries and delivery questions please feel free to call us on 01926 298499.
    For other items, a delivery estimate will be shown where possible. If we feel we are unable to adhere to the timescale after you place your order we will contact you to make you aware and allow you to change your order if necessary. Items will be sent by your chosen delivery method once they are back in stock and payment will not be taken until the items are despatched (NB. PayPal and Amazon orders are charged immediately).
    Click & Collect from a local Post Office
    We now offer Click and Collect to over 10,000 UK Post Offices. Simply select the option during checkout and enter your postcode to find your closest Post Office. We will send the package using Royal Mail Tracked or Special Delivery (next day) and once your package is ready to collect an email will be sent from Royal Mail (proof of ID will be required). Please note it is not possible to use PayPal or Amazon checkout with this delivery option.
    Returns Policy

    In addition to our 30 day returns policy all items purchased from October 1st 2024 may now be returned up until 15th January 2025, terms apply.

    We aim for you to be absolutely delighted with your purchase and therefore offer you 30 days to change your mind on your purchase (excludes pre-owned watches). You may do this by using the form provided with your order or otherwise. We will provide a refund of all payment received (not including delivery upgrades), usually within 48 hours of receipt of the product. This will be made to the original payment method. For most payment methods it will take 3-5 working days for this to show on your statement.

    Please ensure items from your order are suitable before wearing as we are unable to accept items which have been worn under our returns policy.

    For UK orders under £500, you may generate a free tracked and insured returns label on the Royal Mail website (opens in a new window). You can print this label and send it back at any local Post Office at no cost to yourself. It is also possible to have the label printed at Post Office using the QR code from the confirmation email. Please retain the proof of postage receipt. Unfortunately we are unable to provide a refund of return postage for returns through other methods, so we recommend printing the free postage label provided. For orders over £500, please consult your receipt for details on how to return. For international returns, you will need to bear the cost of returns postage. Please ensure the watch is returned to us in an unworn, new condition with all the original packaging (manufacturer's manual and guarantee if applicable). Please ensure items from your order are suitable before wearing as we are unable to accept items which have been worn under our returns policy. We reserve the right to make deductions for unnecessary damage caused to the product by yourself.

    We are also able to offer an exchange to a different product if required, please specify this when returning your product.

    If a fault develops with a watch that is outside of the 30 day returns period or is no longer in a new condition the watch can be returned to the manufacturer under the terms of the guarantee (we are an official UK dealer for all brands on our website) so that they can rectify any issues. For more information please see our returns policy page.

  • Finance Options
  • Authorised Retailer
    First Class Watches are Casio watch retail partners so you can be assured your sparkling new watch will arrive with a stamped manufacturer's warranty, packaging and instructions.
    This item is supplied with:
    • Official Casio guarantee
      fully stamped (where appropriate)
    • Instruction manual
      Please note some brands use online manuals
    • Official Packaging
      Official Casio packaging
  • Product Reviews (8)
    8
    Customer Reviews
    4.9 / 5
    Average Rating
    5 star (Best) (7)
    4 star (1)
    3 star (0)
    2 star (0)
    1 star (Worst) (0)
    5 Quality
    5 Value
    5 Ease of use
    5 Style
    5
    Overall Rating
    Being an addicted collector of all things G-Shock the gstb100 is my favourite. It truly is the poor mans' MTG! Not only is it the best looking G but it's an absolute tank. The simplistic functionally is all I want in a watch and combined with Bluetooth connectivity puts the icing on the cake!
    I own the gstb200 and 300 and though great watches, the 100 series is by far the best in the G-Steel range. I love this series so much I own the GST-B100D-1A and GST-B100GA-1A military version. The military version gets 95% of my wrist time and is without question, the favourite watch in my collection! I just purchased another as the military version will become highly sought after ... The black bezel combined with green accents is stunning. Get a hold of one why you can..

    reviewed 02/03/2023

    4 Quality
    4 Value
    4 Ease of use
    4 Style
    4
    Overall Rating
    The gstb100 is a great looking watch … absolutley love g shocks and the larger watches. Great price on here and rapid delivery too. Well worth the purchase and hopefully buy another g shock soon … especially like the connection to the app via blutooth

    reviewed 03/02/2023

    VERIFIED FIRST CLASS CUSTOMER
    5 Quality
    5 Value
    5 Ease of use
    5 Style
    5
    Overall Rating
    As always my third purchase through the company… or is it fourth!.
    First class watches however also first class service .
    Great value and brands that are quality.

    reviewed 06/08/2022

    VERIFIED FIRST CLASS CUSTOMER
    5 Quality
    5 Value
    5 Ease of use
    5 Style
    5
    Overall Rating
    Great Casio watch with loads of functionality, love it and great service from First Class Watches

    reviewed 18/05/2022

    VERIFIED FIRST CLASS CUSTOMER
    5 Quality
    5 Value
    5 Ease of use
    5 Style
    5
    Overall Rating
    Quick delivery, watch as described

    reviewed 13/05/2022

    VERIFIED FIRST CLASS CUSTOMER
View this page on our other sites:
GET 10% OFF
Your first order with us!
FREE FIRST CLASS* DELIVERY IN THE UK
FREE WATCH BRACELET ADJUSTMENT

Code copied to the clipboard!

Please copy the discount code.

Limited editions, sale items, certain brands excluded
Not valid with finance or any other offer
*See privacy policy for how data will be used.

Click here to continue shopping
10% Off x
Chat
Chat
Live customer help