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Casio

Casio Master Of G-Land MUDMAN Black Watch

GDG-B100-1ER

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£200.00
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In addition to our 30 day returns policy, all items purchased from 1st October 2026 can now be returned until 15th January 2027, terms apply.
In stock - International Delivery Click here for full delivery details
Complete with Casio 2 Year Guarantee
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Product Description

Built for professionals who push the limits in extreme conditions, the MUDMAN GDG-B100 from the MASTER OF G line is ready to support around-the-clock activities, from extreme environments to everyday life. Inspired by the protective structures used on off-road vehicles and survival gear, the watch features a bumper guard design with an intricate multi-component construction. It delivers the shock-, dust-, and mud-resistant structure that defines the MUDMAN identity while also providing a superbly comfortable fit on the wrist. The MIP LCD delivers outstanding readability, even in direct sunlight. The red LED backlight enhances watch visibility during evening activities while also helping preserve the eyes’ natural adaptation to the dark. Equipped with a step tracker and Smartphone Link, the watch also supports training. In addition to stopwatch timing, it measures distance, speed, pace, and calories burned, and offers lap time memory and an interval timer.

 

Training Function Display of distance, speed, pace and other calculated values based on accelerometer, auto/manual lap times, Auto Pause, target alert setting (time, calories burnt) on/off, training display customisation (elapsed time, distance, pace, lap time, lap distance, lap pace, average pace, speed, average speed, calories burnt)

Life log data Daily data display (step count), Monthly data display (running distance)

Training Data (Up to 100 runs, up to 140 lap times per run) Elapsed time, distance, pace, calories burned

 

  • World time 38 time zones* (38 cities + Coordinated Universal Time), daylight saving on/off, auto summer time (DST) switching *May be updated when connected to a smartphone.

  • Stopwatch

    1-second stopwatch Measuring capacity: 99:59'59'' Measuring modes: Elapsed time, split time

  • Timer

    Countdown timer Timer for interval measurement (up to five time settings) Measuring unit: 1 second Input range: 00'00" to 60'00" (1-second increments) Others: Auto-repeat (number of repeats settable from 1 to 20)

  • Alarm/hourly time signal

    4 daily alarms with snooze

  • Light

    LED light Auto light switch, selectable illumination duration (1.5 seconds or 3 seconds), afterglow

  • Light color

    LED: Red

  • 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 3 hours every day.)

  • Accuracy

    Accuracy: ±15 seconds per month (with no mobile link function)

  • Other features

    12/24-hour format

    Flight mode

    Regular timekeeping: Hour, minute, second, am/pm, month, date, day

    User profile creation

    Aeroplane mode

    Vibration on/off

    Memory-in-pixel (MIP) LCD

    Screen Off Function

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Product Specifications
Gender
Men's Watches
Movement & Power
Battery Powered Quartz
Movement Origin
Other
Collections
Activity Trackers
Features
Bluetooth, Colour Screen, Auto LED, Alarm, Activity Monitor, 24 Hour Subdial
Strap Material
Rubber
Case Shape
N/A
Display Type
Digital
Dial Colour
Orange, Black
Strap Colour
Black
Clasp Type
Standard Buckle
Crown Type
N/A
Hour Markers
None
Water Resistance
200 metres
Condition
New
Delivery & Returns
Free delivery is available on all UK orders -
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 +441926 298499 (English only).
For other items, a delivery estimate will be shown where possible. It is an estimate only - supply is in the brand's control and the timescale cannot be guaranteed. 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. For UK orders paid by card, Apple Pay or Google Pay we do not charge you until we are about to despatch your order; PayPal, Amazon Pay, Klarna, finance and international orders are charged when the order is placed.
Returns Policy

In addition to our 30 day returns policy, all items purchased from 1st October 2026 can now be returned until 15th January 2027, 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. 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 2 working days of receiving your return (it may take a little longer during busy periods or for more complex returns). 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.

Returns are free on all UK orders. For 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 refund return postage for orders under £500 sent back by other methods, so we recommend printing the free postage label provided. For orders from £500 to £2,500, the Royal Mail label does not cover the value of the item, so please send it back by Royal Mail Special Delivery, insured for its full value, and we will reimburse the postage separately (please keep your proof of postage — full details are on your receipt), or contact us and we can arrange a collection. For orders over £2,500, please contact us and we will arrange the return for you. 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.

For UK orders we are also able to offer an exchange to a different product if required, please specify this when returning your product. For international orders, please return the item for a refund and place a new order for the product you would like.

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.

Authorised Retailer
First Class Watches IRL 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
Please note: Outside of the UK, the duration of the manufacturer's guarantee may be different and therefore you may need to return your watch to First Class Watches in order to get the full guarantee.

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