Casio G-Shock

Men's Master of G-Land GDG-B100 Series 50mm Yellow Strap Watch

The Casio G-SHOCK Master of G-Land GDG-B100-1A5ER is built for adventure, combining the legendary toughness of the MUDMAN collection with practical functionality for demanding environments. Featuring a distinctive black case with a contrasting yellow resin strap, this rugged digital watch takes inspiration from protective structures found on off-road vehicles and survival equipment. Its Carbon Core Guard construction provides excellent shock resistance, while specialised sealing protects against mud and dust. The watch also offers 200-metre water resistance, making it a dependable companion for outdoor pursuits and everyday wear.

Designed for excellent visibility and practical performance, the GDG-B100-1A5 features a high-definition Memory-in-Pixel (MIP) LCD with an automatic red LED backlight for easy reading in bright sunlight and low-light conditions. Additional features include Bluetooth smartphone connectivity through the Casio Watches app, automatic time adjustment, world time across 38 time zones, a step tracker and comprehensive training functions measuring distance, speed, pace and calories burned. Further specifications include a 1-second stopwatch, interval countdown timer, four daily alarms with snooze, vibration alerts, mineral glass and an approximate two-year battery life. The case measures 63.6 x 49.6 x 16.2mm, weighs just 66g and is paired with a comfortable bio-based resin strap.

At Francis & Gaye, we are proud to offer an extensive selection of quality watches from leading brands, backed by the personal service and expertise of a family-run jewellers. When shopping with us, you can enjoy the reassurance of purchasing from an established UK retailer, with a knowledgeable team who genuinely care about the products we sell and the service we provide. Whether you are looking for your next adventure watch or a special gift, we aim to make your shopping experience friendly, straightforward and enjoyable.

If you’re near one of our stores in Coventry or Loughborough, you’re very welcome to collect your online order in person. Simply give our customer service team a call on 0800 977 4391 and we’ll make sure everything is ready for you when you arrive.

If you’re not local, or just short on time, we offer a range of delivery options to suit you. We have partnered with DHL, DPD & Royal Mail, options include free UK delivery services on orders over £50.00, to express delivery options to most destinations worldwide. All delivery options (excluding 2nd class) are fully tracked and insured for your peace of mind.

Read our Delivery Information page (opens in new window) for a list of all delivery options.

We want you to be completely satisfied with your purchase. If for any reason you are not, you may return your order within the periods below for a full refund or exchange; T&C's apply.

Not Wanted, Wrong or Arrived Damaged
JANUARY 22ND 2027

Orders Using Finance / Optional Insurance
30 DAYS

For full details please visit our Returns & Exchanges page (opens in new window).

We offer professional engraving on a range of items with precision and care. Whether you’re personalising a gift or adding a special message, we can help bring your idea to life.

Please visit our Engraving page for full details (opens in new window).