Quartz, mineral glass, 55.4mm carbon case— 20-bar rated. Mix-dial smartwatch built for extreme terrain and urban command, with a rugged resin strap.
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Master of G Collection • Ref. GG-B100XM-1AER
Born in the harshest environments on earth, the G-Shock Mudmaster GG-B100XM-1AER is the definitive tool watch for those who push beyond the beaten path. Its imposing carbon case, full black dial, and smart connectivity make it as relevant in a technology-driven world as it is in the middle of the wilderness.
At 55.4 x 51.3 mm, this is a watch that commands presence. It does not whisper — it declares. Mud-resistant, shock-resistant, and smart-connected, the Mudmaster is built for those who demand performance without compromise.
Reference: GG-B100XM-1AER • Collection: Master of G
Why this watch stands apart
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● Carbon Case & Mud Resistance The case is constructed from high-density carbon fibre-reinforced resin — exceptionally light, extraordinarily tough. Combined with Casio’s proprietary mud-blocking structure, no dirt, dust or debris can penetrate the movement. This is a watch built for the world’s toughest terrain. |
● Smart Connectivity via Bluetooth Paired with the G-Shock Connected app, the Mudmaster syncs time automatically, logs location data, and connects seamlessly with your smartphone. Expedition planning, tracking, and time management come together in a single rugged package — analogue reliability, digital intelligence. |
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● Quartz Multifunction Movement The quartz movement powers a rich suite of functions: compass, altimeter, barometer, thermometer, step counter, and more. Every data point you need in the field is available at a glance on the mixed analogue-digital dial — no signal required, no excuses accepted. |
● 20-Bar Water Resistance Rated to 200 metres, the Mudmaster handles river crossings, heavy rain, and water-based activities with total confidence. Its resin strap and 16 mm lug width are designed for secure fit under pressure — so your gear stays on, whatever the conditions throw at you. |
Design forged for the field
The all-black aesthetic of the GG-B100XM-1AER is not a fashion choice — it is a tactical one. The matte carbon case absorbs rather than reflects light, keeping a low profile in the field. The mixed dial combines analogue hands with a digital display window, giving instant access to both time and sensor data without removing your gloves.
Every detail of this watch has been stress-tested: the crown guards, the reinforced bezel, the shock-absorbent resin strap. The result is an object of brutal functional beauty — intimidating in scale, precise in purpose.
A collector’s piece with real-world purpose
The Master of G line has been a cornerstone of G-Shock collecting since its introduction — each edition a milestone in the evolution of extreme watchmaking. The XM suffix signals an exclusive material specification, making the GG-B100XM-1AER a rarer, more sought-after variant within an already iconic series.
Economically, the Mudmaster offers extraordinary value: military-grade construction, smartwatch connectivity, and a sensor suite that would cost a multiple of this price across separate devices. It is the single-purchase solution for the outdoorsman, the explorer, and the collector who refuses to choose between technology and toughness.
Master of G Collection — G-Shock Since 1983
Whether you are navigating a mountain trail, logging an expedition, or simply wearing a statement of uncompromising intent, the GG-B100XM-1AER delivers on every level. Smart enough for the connected world. Tough enough for everything beyond it. This is the Mudmaster — and it was built to outlast everything you put it through.
Casio GG-B100XM-1AER• Master of G Mudmaster • Quartz Multifunction • Carbon Case • 20 Bar • 55.4 x 51.3 mm • Black Dial
Ref. GG-B100XM-1AER
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