Featured image: Kansai explorer, CC BY-SA 3.0, via Wikimedia Commons
The G-Shock Mudman is Casio’s mud-resistant G-Shock, built around sealed button covers that stop grit, dirt, and mud from jamming the controls. The current model is the GW-9500, available in black and olive green, priced at about $380.
Quick answer: The G-Shock Mudman is a purpose-built field watch favored by military operators, outdoor guides, and anyone who works in genuinely muddy or dusty environments. Its defining feature is the mud-proof button structure that seals every control opening. Actor Alan Ritchson wears the olive-green GW9500-3 in the 2026 Netflix action series War Machine. The GW-9500 retails for about $380 and pairs solar power with Multi-Band 6 atomic timekeeping and a triple sensor suite.
What Makes the G-Shock Mudman Different from Other G-Shocks
Every G-Shock is shock-resistant and water-resistant. The Mudman takes that one step further by addressing a problem most watches ignore entirely: mud and fine particulate matter clogging the pushers.
On a standard G-Shock, the gaps around each button are small but open. Over time, mud, dust, and sand work their way in, making buttons sticky or unresponsive. The Mudman solves this with molded resin covers that seal over each pusher, creating a continuous surface with no exposed gaps. Pressing a button pushes the cover in, which transmits force to the button underneath without opening a channel for debris.
The current GW-9500 adds a triple sensor to this foundation: a compass, a thermometer, and a pressure sensor that doubles as an altimeter and barometer. Its predecessor, the GW-9300, carried only a compass and thermometer. The extra sensor makes the GW-9500 a more complete outdoor instrument.
| Spec | GW-9500 (Current Mudman) |
|---|---|
| Case size | Approx. 55 × 51 mm |
| Case / band material | Resin with carbon fiber insert band |
| Power | Tough Solar |
| Atomic timekeeping | Multi-Band 6 (radio-controlled) |
| Sensors | Compass, thermometer, barometric pressure / altimeter |
| Water resistance | 200 m |
| Mud resistance | Yes — sealed button covers |
| Approximate retail price | About $380 |
Where to buy
Compare the same watch on both sites: eBay for pre-owned and vintage pieces, Amazon for new stock.
Casio G-Shock Mudman GW9500-1 (Black)
Casio G-Shock Mudman GW9500-3 (Olive Green)
Casio G-Shock Mudmaster GG-B100-1B Alternative
Prices and availability change; check the listing before you buy.
Who Wears the G-Shock Mudman
The Mudman earns its following in environments where watches take real punishment. It is not a fashion piece or a desk watch dressed up in rugged styling — it is genuinely popular among people who need a timekeeping instrument to function after a full day in the field.
Military and law enforcement. The G-Shock mud-resistant line has a long history with professional users in dirty environments. The earlier G-9000 Mudman, the analog-digital predecessor to the GW-9300, appeared on the wrists of Navy SEALs during training and operations. The sealed-button design is specifically valued in this context: an unresponsive button during a mission or patrol is a real liability. The Mudman’s solar power also removes battery changes as a field-maintenance concern.
Search and rescue teams. SAR operators frequently contend with mud, riverbanks, and terrain that destroys most consumer electronics. The GW-9500’s barometric pressure sensor is directly useful here — a sudden drop in pressure can signal incoming weather that changes a rescue timeline. The compass and altimeter add navigation value when GPS signals are unavailable or devices are flat.
Construction and infrastructure workers. Concrete, clay, sawdust, and drilling debris are daily hazards on job sites. A standard watch becomes useless quickly in these conditions. Workers in these trades tend to gravitate to the Mudman not because it looks tactical, but because it keeps working when other watches stop.
Outdoor guides and expedition professionals. Mountain guides, trail leaders, and survival instructors have all been associated with the Mudman line. The combination of reliable timekeeping (solar-powered and automatically synced), multi-function sensors, and genuine environmental protection is hard to match in this price range.
Alan Ritchson Wears the G-Shock Mudman GW9500-3 in War Machine
The most prominent recent screen appearance of the Mudman is in War Machine, a 2026 Netflix action series in which Alan Ritchson plays an Army Ranger candidate. Ritchson wears the GW9500-3, the olive green variant of the current Mudman, throughout the show.
The choice has a degree of realism behind it. The Mudman’s mud-proof construction and field-ready sensor suite are consistent with the kind of watch an Army Ranger candidate might reasonably carry. G-Central, which identified the exact reference, notes one realistic caveat: the U.S. Army’s Ranger School packing list restricts watches without GPS, a compass, or a step counter, and the GW-9500 includes a compass — but for dramatic purposes, the watch reads as credible.
Ritchson is the second notable screen figure to wear a G-Shock Mudman in a military context. The olive green GW9500-3 retails for about $380, the same as the black GW9500-1. Both are available directly from Casio.
G-Shock Mudman Models: A Short History
The “Mudman” designation goes back to the original G-9000, launched in 2000. This was the first G-Shock with sealed mud-resistant buttons. It used a conventional battery, lacked sensors beyond basic timekeeping, and was priced as an accessible field watch. Navy SEALs and other professional users picked it up during this era.
The G-9300 followed, adding an analog-digital display and a compass/thermometer sensor pair. It became the version most closely associated with the Mudman identity: large, feature-packed, and purpose-built. The GW-9300 was the solar and atomic upgrade, sold primarily in Japan, and was discontinued in March 2024.
The GW-9500 is the current generation, released internationally and representing the most capable Mudman to date. The shift from two sensors to three — adding barometric pressure/altimeter — makes it a more complete field instrument than its predecessors. If you want a new Mudman today, the GW-9500 is the only option from current production.
For those interested in related G-Shock field tools, Casio also makes the G-Shock Rangeman, a three-sensor watch (compass, thermometer, barometer) that addresses similar use cases with a slightly different aesthetic and button layout.
G-Shock Mudman vs. Mudmaster: Are They the Same Watch?
The names are often confused, and the distinction matters if you are buying.
The Mudman is specifically the GW-9500 (and its predecessors). It has a round-ish case, covered buttons, and the features described above. The Mudmaster is a separate, premium line — the GG-B100 and GWG-series watches — with Bluetooth, more carbon fiber construction, and generally a higher price point (roughly $280 to $450 for the GG-B100, and more for the GWG-2000).
Both series share the mud-resistant button concept, but the Mudmaster is positioned as a more premium product, while the Mudman occupies a more utilitarian, field-practical position. The Mudmaster’s Bluetooth and smartphone syncing are convenient for everyday use; the Mudman’s simpler approach keeps it more field-focused and eliminates app dependency.
The Casio DW-5600E and similar classic square G-Shocks represent the budget alternative for people who want G-Shock durability without the sensor suite. They lack the mud-proof button design but cost a fraction of either the Mudman or Mudmaster. For details on both rugged and everyday G-Shock options, the best digital watches guide covers the broader category.
Should You Buy the G-Shock Mudman?
The GW-9500 makes sense if you genuinely work or operate in muddy, dusty, or high-debris environments and want a solar-powered watch that never needs a battery swap. The Triple Sensor adds real utility: the barometric altimeter is useful in the mountains; the compass is a genuine navigation tool; the thermometer is handy in remote settings.
It is a large watch — about 55 mm across — and sits high on the wrist. For everyday wear, this can feel bulky. Based on published specs and reviews from outdoor users, the Mudman’s size is consistently cited as the main drawback for those transitioning from smaller watches.
If you want the watch Alan Ritchson wore in War Machine, the GW9500-3 in olive green is the specific reference. If you prefer black, the GW9500-1 is functionally identical. Either is the best current entry point into the Mudman line.
FAQ
What is the G-Shock Mudman?
The G-Shock Mudman is a line of Casio G-Shock watches designed with sealed, mud-resistant buttons. The current model is the GW-9500, which adds solar power, Multi-Band 6 atomic timekeeping, and a Triple Sensor (compass, thermometer, barometric altimeter) to the mud-proof foundation established by the original G-9000 in 2000.
Is the G-Shock Mudman discontinued?
The previous-generation GW-9300 Mudman was discontinued in March 2024. The current GW-9500 is in production and available for about $380. If you find a GW-9300 available new, it is old stock; expect to find it primarily on the pre-owned market at varying prices depending on condition.
What watch does Alan Ritchson wear in War Machine?
Alan Ritchson wears the Casio G-Shock GW9500-3, the olive green version of the current Mudman, in the 2026 Netflix series War Machine. He plays an Army Ranger candidate, and the watch’s mud-resistant, field-ready design fits the role. The GW9500-3 retails for about $380 on Casio’s site.
What is the difference between the G-Shock Mudman and the Mudmaster?
The Mudman (GW-9500) and Mudmaster (GG-B100 and GWG series) are separate G-Shock lines that both feature mud-proof button construction. The Mudmaster is positioned as a premium product with Bluetooth, more extensive carbon fiber use, and a higher price; the Mudman is more utilitarian, field-focused, and slightly less expensive. Both are legitimate choices for demanding conditions.
What does the G-Shock Mudman measure?
The GW-9500 Mudman’s Triple Sensor measures compass heading (with bearing memory and north indicator), ambient temperature, and barometric pressure — with the pressure data used to calculate altitude (as an altimeter) and to show weather trend readings (as a barometer). It also displays sunrise and sunset times for your location.
How much does the G-Shock Mudman cost?
The GW-9500 retails for about $380 from Casio’s official site. Pre-owned GW-9300 models from the previous generation sell on the secondary market for roughly $150 to $250 depending on condition. The Mudmaster GG-B100, a related premium watch, starts at roughly $280 to $350 new.
Sources
- G-Central: Alan Ritchson wears a G-Shock Mudman watch in War Machine
- G-Central: G-SHOCK GW-9300 Mudman review
- G-Central: G-Shock Mudman G9300-1 (G-9300 series) is discontinued
- G-Central: G-Shock DW-9052 and G-9000 watches are also worn by Navy SEALs
- G-Central: Casio G-Shock Master of G buyer’s guide