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Extended Warranty By WatchO
  • G-Shock Mudmaster Tough Movement Triple Sensor Mud Resistant Watch GWG-1000-1A3ER
  • Casio G-Shock Mudmaster GWG-1000-1A3ER
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  • Casio G-Shock Mudmaster GWG-1000-1A3ER
  • Casio G-Shock Mudmaster GWG-1000-1A3ER
  • Casio G-Shock Mudmaster GWG-1000-1A3ER
  • Casio G-Shock Mudmaster GWG-1000-1A3ER
  • Casio G-Shock Mudmaster GWG-1000-1A3ER
  • Casio G-Shock Mudmaster GWG-1000-1A3ER
  • Casio G-Shock Mudmaster GWG-1000-1A3ER
  • Casio G-Shock Mudmaster GWG-1000-1A3ER
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UK Delivery

Standard UK delivery in 3-5 days
Expedited UK delivery in 1-2 days
£ 4.99
Saturday delivery within UK
£ 10.00

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G-Shock Mudmaster Triple Sensor Mud Resistant Watch GWG-1000-1A3ER

RRP: £660.00
£650.00    & Free UK Delivery. 45 days returns.

Express UK Delivery available.

(You save £10.00)
5% OFF Voucher: GSHOCK5
Price after voucher:
20% OFF Voucher: GSHOCK20
Price after voucher:
based on 12 reviews
 (Available In Stock)
0% Interest Free
Buy now, pay monthly on products over £400. Ring us to avail this offer. Learn More

Click the button below to add the G-Shock Mudmaster Triple Sensor Mud Resistant Watch GWG-1000-1A3ER to your wish list.

G-Shock Master Of G Collection:
G-Shock GWG-1000-1A3ER G-Shock GWG-1000-1A1ER G-Shock GPR-B1000-1ER G-Shock GPW-2000-1AER G-Shock GWN-Q1000-1AER G-Shock GWF-D1000-1ER G-Shock GWN-1000B-1BER

Product Info

Collection & Inspiration:
  • Premium super-tough Mudmaster watch with olive green strap from "Master of G" collection. The watch has been designed to be impervious to mud. Made for the toughest adventures, caving, climbing, riding, potholing; you name it, this watch can take it.
Timekeeping Functions:
  • Radio Controlled

    Multiband 6 radio controlled timekeeping for local and world time. Every 24 hours, the watch will automatically sync the time to the local time to ensure the time is accurate.

  • Tough Solar

    Casio Tough Solar technology powers the watch by light. With this eco-friendly feature, you never need to replace the battery, also helping maintain the water resistancy of the watch.

  • World Time

    Listed around the dial, the cities indicate the different time zones you can set the watch to. Once set, the watch will set itself to the local time.

  • Day & Date

    Day & date is displayed on the digital dial. Automatic calendar ensures date does not need to be adjusted even on leap years.

Triple Sensor:
  • Barometer

    Built in air pressure sensor measuring 260hPa to 1,100hPa. Featuring an atmospheric pressure tendency alarm, which will activate when it detects any significant pressure changes.

  • Altimeter

    Built in atmospheric pressure sensor that can measure from 700m below sea level to 10,000m above sea level.

  • Thermometer

    Detects the ambient temperature around the watch and can has a range of -10°C to 60°C

  • Compass

    The built in digital compass displays your direction and directional degree. When activated this feature also have a graphical display of north, south, east and west

Notification features:
  • Alarms

    This watch is fitted with 5 daily alarms that can be set anytime within a 24 hour period.

  • Timer

    A countdown timer can be set on this watch to countdown upto an hour. Once the set time has run out, the watch will notify you that the countdown has ended.

  • Chronograph

    Built in chronograph that can measure Elapsed time, split time and final time upto 24 hours.

Materials and Specifications:
  • Olive Green resin strap with sports styling for a comfortable fit.
  • Fitted with premium sapphire crystal glass with 9H hardness provides better protection from scratches in your daily life.
  • LED back-light with auto-LED and afterglow technology.
  • Both the hands and hour markers are coating with a film that gives improved visibility in low light.
  • Case size: Approx 56mm.
  • Suitable for everything from showering to diving and everything in between, this watch is rated for 200m water resistance.
  • 2-year manufacturer warranty, extended to 3 years warranty through the WatchO Extended Warranty offer.

For a complete pdf manual for this watch, click here

Pro-Tip! If you see this watch being sold as GWG-1000-1A3 without "ER" in the end, it is likely to be a grey market. "ER" in the end indicates it is UK authorised.

Shop With Confidence
A Google certified shop.
Free Extended warranty to 3 years.
Official UK stockist for G-Shock Watches.
Extended 45 days returns.
Winner: "Gold Trusted Merchant" award by Feefo & "Service with a smile" award
Read what customers are saying about us on Feefo (2600+) and Google (1400+)
Help Guides


Warranty2-year warranty + Additional year from WatchO
Usually ForMen
Water Resistancy200 Metres
Radio-ControlledMulti-Band 6
Dial ColourBlack
GlassSapphire crystal glass with anti-glare coating
Case ColourBlack
Case Width56mm
Case Thickness18mm
Case MaterialResin
Band ColourGreen
Band MaterialResin
Clasp TypeBuckle
Date FeatureVia digital screen
Day FeatureVia digital screen


CASIO G-SHOCK GWG-1000 Product Video (02:20)
陸の覇者。 MUDMASTER GWG-1000誕生。 MUDMASTER - G-SHOCK - CASIO http://g-shock.jp/special/mudmaster/
  • CASIO G-SHOCK GWG-1000 Product Video
    陸の覇者。 MUDMASTER GWG-1000誕生。 MUDMASTER - G-SHOCK - CASIO http:...
  • G-Shock Mudmaster GWG-1000-1A3 | WatchO
    http://www.watcho.co.uk/watches/casio... Stay in touch! Twitt...

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Product Reviews

Write a review

  1. First class service

    Posted by on

    I collect G-Shock watches and this is now my favourite. The watch is full of features and looks great. A highly recommended purchase for the discerning watch enthusiast or G-Shock lover and great value for money.

    I noted the watch on the website at 1pm on a Friday, decided to buy it at 2pm, but realised that I could not afford it. I called the shop and discussed interest free credit. A link to a form was sent to me immediately and by 2.15pm the credit agreement had been accepted. I paid the deposit and received the watch the next morning (a Saturday) at 10.15am. What a service! I have used WatchO before and have always found their customer service first class. I trust them wholeheartedly and recommend them to anyone looking to purchase a new watch. Verified WatchO buyer (Purchase date: 03/02/2019)

  2. Excellent, reliable Company

    Posted by on

    Excellent advice and service, would definitely recommend.

    Prompt delivery.

    Verified WatchO buyer (Purchase date: 03/12/2018)

  3. Great service

    Posted by on

    Very pleased with my purchase and the phone advise given before and after sale. Great service,before and after sales for set up help,extra warranty added! Best price anywhere! Except for grey imports!! I bought with confidence.very pleased.

    Verified WatchO buyer (Purchase date: 12/07/2018)

  4. First Class service

    Posted by on

    Wanted this watch for ages. Been looking for over 12months, WatchO made it easy. The online chat made my purchase easy and straightforward It showed me I was dealing with a reputable company
    Wouldn't hesitate to recommend them and also order again in the future

    Verified WatchO buyer (Purchase date: 01/05/2018)

  5. Awesome watch

    Posted by on

    Just received my mudmaster absolutely over the moon awesome watch looks fantastic on my wrist. I'm over the moon I've wanted this mudmaster for over 12months saw your ad on facebook then went to your site and the rest is history. Thanks to Sam and the team I'm well chuffed with my purchase first class service and would definitely recommend you and order again from you.

    Verified WatchO buyer (Purchase date: 01/05/2018)

  6. Cheapest deal.... fantastic customer service!!

    Posted by on

    Beast watch!!!! It took me a year of research before I purchased but it was worth it. 5-star service!!!! I did my research before I purchased this product. Came across this website. It was the cheapest and best deal on the market. I had the buy one take one offer plus they upgraded my delivery to next day for free. I don't normally do feedback coz I couldn't be bothered but this one was I thought is the least thing I can do for them for their fantastic service and excellent product. I will purchase again.

    Verified WatchO buyer (Purchase date: 20/01/2018)

  7. Best Price & Service

    Posted by on

    I would like to congratulate Watcho both in terms of customer service (Special mention for Kiran), and on price. I spent a lot of time researching the best price for this model both nationally and internationally, and when you factor in delivery and tax, Watcho were by far the best price. To recieve a free gift on top of that has already got me recommending the site to others

  8. Cheapest price on internet

    Posted by on

    Great service, cheapest price on the internet, no postage, free gift and arrived very well wrapped the next day!

    Verified WatchO buyer (Purchase date: 01/11/2017)

  9. Seems a great watch

    Posted by on

    Seems a great watch at a good price...multi-functional...well built...looks well on the wrist ...so far cannot fault..top watch. Checked I had made order by phone. Shipped item right away...well packaged ...great service and with extended warranty and free gift included...top seller

    Verified WatchO buyer (Purchase date: 11/07/2017)

  10. Another positive experience....

    Posted by on

    Excellent service and communication. They went the extra mile to ensure I got the Watch on time

    Verified WatchO buyer (Purchase date: 18/05/2017)

  11. First class service and price!

    Posted by on

    It is beautifully made and appears to work perfectly. Very happy. I bought from WatchO because they were the cheapest but also because they had great feedback. I had a phone call from them the day after ordering online just to confirm delivery address details and the watch arrived the next morning. I really can't recommend them enough. Brilliant.

    Verified WatchO buyer (Purchase date: 12/12/2016)

  12. Highly Recommended

    Posted by on

    Great piece of kit. Next time I'm lost on top of a mountain in freezing temperatures. The thermometer, altimeter and compass will come in handy. Very quick delivery, good communication, received in perfect condition. Faultless service, more than happy to use Watcho for my next purchase.

    Verified WatchO buyer (Purchase date: 12/12/2016)

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