SKU: 58456549288

MWC "Depthmaster" 100atm / 3,280ft / 1000m Water Resistant Military Divers Watch in a Titanium Case with GTLS and Helium Valve (Automatic)

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Description

MWC "Depthmaster" 100atm / 3,280ft / 1000m Water Resistant Military Divers Watch in a Titanium Case with GTLS and Helium Valve (Automatic)SKU: T100AT 12 ST SLA The MWC Titanium Depthmaster is our latest heavy duty professional dive watch and is engineered for extreme environments. Designed around real operational requirements rather than cosmetic dive styling, this model combines 100ATM (1000m 3,280ft) water resistance, a sapphire crystal, ceramic bezel and always on GTLS tritium illumination. Unlike many oversized dive watches, the Depthmaster is built to remain wearable for extended

SKU: T100AT/12/ST/SLA

The MWC Titanium Depthmaster is our latest heavy-duty professional dive watch and is engineered for extreme environments. Designed around real operational requirements rather than cosmetic “dive styling,” this model combines 100ATM (1000m / 3,280ft) water resistance, a sapphire crystal, ceramic bezel and always on GTLS / tritium illumination.

Unlike many oversized dive watches, the Depthmaster is built to remain wearable for extended periods. Large military watches are frequently manufactured in titanium to reduce fatigue — the reduction in weight makes a substantial difference when worn daily for long durations, particularly on a 47mm watch designed for all types of diving from Scuba to Saturation diving.

The watch uses a wider 24mm strap (most military divers use 20mm) for improved stability and security during active use, and the ceramic bezel offers excellent grip even in wet or extremely cold conditions.

This particular variant features a 24-hour military dial for quick time interpretation in operational or low-light conditions.

Tritium GTLS Illumination

The Depthmaster uses GTLS tritium tubes on the hands and markers. Unlike conventional lume, tritium does not require charging from sunlight or artificial light. The watch remains readable continuously, all night, every night and GTLS tritium tubes typically remain useful for about 20–25 years — making it especially suitable for military, security, aviation and maritime use.

The bezel markings additionally use Luminova for high initial brightness when exposed to light.

Helium Escape Valve (Why It Exists)

All MWC 100ATM models include an automatic helium escape valve.

Helium molecules are extremely small. During saturation diving, they can slowly enter the watch case while divers live in pressurised environments using helium-oxygen breathing mixtures. When the diver returns to surface pressure, trapped helium expands and can force out the crystal or damage the crown.

The one-way valve automatically releases the internal gas during decompression, preventing damage to the watch.

This feature is primarily required by saturation divers. Most recreational divers will never need it, but a true professional-grade deep diver must include it to be fully fit for purpose.

Sapphire Crystal

The watch is fitted with an anti-reflective sapphire crystal. Sapphire is significantly more scratch- and impact-resistant than mineral glass and far more durable than acrylic. In real-world service use, the overwhelming majority of cracked crystals occur on mineral or acrylic watches — sapphire dramatically reduces that risk.

Movement

The Depthmaster is powered by the reliable 24-jewel NH35A automatic movement with hacking function, allowing precise synchronisation.
Power reserve: approximately 41 hours.

Specifications

• Movement: 24-Jewel Automatic NH35A with hacking (hand-winding capable)
• Water Resistance: 100ATM / 1000m / 3,280ft
• Crown: Screw-down, sealed
• Helium Escape Valve: Automatic one-way release valve
• Case Diameter: 44mm (47mm including crown)
• Thickness: 18mm
• Lug-to-Lug Length: 48mm
• Case Material: Titanium
• Crystal: Sapphire with anti-reflective coating
• Crystal Diameter: 31mm
• Bezel: Unidirectional dive bezel with ceramic insert
• Illumination: Tritium GTLS tubes on hands & markers, Luminova on bezel
• Lugs: Spring-bars
• Strap: 24mm military NATO webbing strap (1 x Grey and 1 x Black)
• Weight: Approx. 85g

Designed for Real Conditions

Professional divers, maritime personnel and military users often operate in cold, wet and high-pressure environments for extended periods. Watches in this category are intended to be reliable equipment rather than jewellery. The Depthmaster is built accordingly: high water resistance, continuous night visibility, shock resistance and simple operation while wearing gloves.

This is not a fashion diver — it is a functional instrument watch engineered for harsh service conditions.

Shipping Notes
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Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
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SKU: 58456549288

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4.0 ★★★★★
Based on 10 reviews
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Product Reviews
H
Verified Purchase
Hannah Clere
Louisville, US
★★★★★ 5
Sturdy & we repurchase yearly for Hubby’s refresh
Color: Brown (Rodeo)
This is my hubbys tried and true wallet. He requests this same one every year as a refresh. He wears his 24/7 in his back pocket so it gets discolored but still holds its shape pretty well with a slight bend.
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Reviewed in the United States on March 26, 2026
S
Verified Purchase
Sully Cortez
Draper, US
★★★★★ 5
My favorite watch of all time by a long shot
Color: Brown/Green/Tan, Color: Brown/Green/Tan
Hands down this is the best watch I've gotten so far. I love my Infantry watch but with 24mm bands it's a big sucker. Then there is my Timex Expedition Gallatian which comes in at 22-23mm which is just perfect for my size wrist. It's a perfect fit and I LOVE the Velcro "Fastwrap" strap that comes with it. It's sometimes so comfortable I forget I'm even wearing a watch and it still holds up when swimming! And now this guy, the Expedition Resin Combo as it's called. It at 20mm band size, it is a tad small on my wrist - I wish it was 22mm size as it'd be a 6star or 7star watch haha. Once I got the other Timex watch I knew this "Expedition" series would be awesome. However I didn't like two things about the first one, the date had to be set by continually winding clockwise till you got the day (very tedious) and the indiglo made it so you couldn't see the date. So I decided I want an analog/digital combo but in the Expedition series. On Amazon at least there were only 2-3 models of Timex Expedition that had this specific combination. So I opted for the shall we say middle of the road option for price vs elegance. So when the Expedition Resin Combo came in I was wowed by how amazing this thing is. It's got SO MUCH functionality it's not even funny. Digitally set your date, set your alarm (two diff alarm times), use a stopwatch function, and get both 12-24 hr digitally and analog, and has glow in the dark analog hands/light up digital indiglo feature, and is water resistant up to not 30, or 50, or even 75meters but up to 100 meters water resistant. Oh did I mention it has a rotatable divers bezel which rotates clockwise and counter? Yup got that too. This is by far the BEST watch I've owned period in terms of functionality. In terms of design it's also really stellar. I wish again it was a tad bigger but only by mm's. It came with a really nice brown traditional style wrist strap that was actually very comfortable, but for me is a no go as I'm slightly allergic to stainless steel when I wear watches, so I need to cover up the backplate and as nice as the stock strap is, it just didn't work for me. So I attached quick release pins, and the Velcro expedition strap which feels amazing. I also picked a really nice NATO style strap which again prevents direct skin contact at all times. THAT combination is equally as comfortable as the Velcro strap. The indiglo is some of the brightest I've seen, the analog hands will glow at even the slightest hint of charging in nearby ambient light. I know people talked about the crown or the dual dial that sets the analog hands being weak and breaking ( time will tell) but so far I've set it once and have forgotten about it as this thing does a great job of not losing time at all. If Timex came up with some sort of smart interface for the digital portion of the watch that'd be sick. But for now the 1980's calculator style numbering and lettering for the digital portion brings about a kind of retro feel. I also picked up a Voguestrap Velcro strap more along the colors of the watch but it wasn't long enough to fit around my wrist nicely without being too tight. Something to watch out for when buying a band/strap for the watch. All in all so far I givethis watch 5stars and I can't stop wearing it over my other watches including my Infantry brand watch which feels really comfortable with the NATO strap, but just isn't bright enough at night compared to this watch with the indiglo. I mean it's bright and it's awesome haha. Unlike my other Expedition watch it doesn't block the date or digital portion of the watch from being seen at night, you can see the entire face of the watch, period. And it's great. Would I buy this watch again should it break?? Absolutely. Would I buy this watch over other more expensive watches with better features? Yea absolutely. Let me tell you this is about the best watch you can buy without getting a smart watch or gps watch and keeping it outdoor elegant. I love the outdoors (hate spiders still) and can absolutely say this watch would serve me well no matter the circumstance, indoors outdoors daytime nighttime, wartime, sleeptime, in the rain, in the snow, in the desert, and in the arctic. This will undoubtedly be with me for a long time. And because it's so small I hardly notice it unless I wanna check the date or time. Stop looking and get this watch. You'll get over how small it is really quickly. If you don't, then hey scour for the two models I spoke about earlier, they might be more up your alley. This one is just about perfect for me.
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Reviewed in the United States on September 5, 2017
C
Verified Purchase
Coffeeman
Battle Creek, US
★★★★★ 5
The Coolest Timex Watch In Years
Color: Brown/Green/Tan
This is the nicest looking watch Timex has done in a long time. I have worn their Expedition watches before, usually my watch of choice for deployments, because they are basically indestructible. And if they do get scuffed or beat up, they do not cost a fortune to replace. I like the features of this particular watch. The rotating bezel is a major plus. The crystal is slightly recessed behind the bezel to protect it from scratches. And the watch is waterproof. The visibility of the dial and hands is excellent both in daylight and using the awesome Indeglow feature. The nylon fabric watchband is double layer of contrasting color and looks good. The band is stiff for a fabric band, but is surprisingly comfortable and smooth feeling on the arm. I found myself forgetting to take it off at night. I like the analog/digital combo. The digital area defaults to time. It is small and does not light up with the Indeglow. A single button press brings up the date, which is a plus. There are too many features to the tiny digital area: timers, lap, time zones, alarm, etc. With only 3 buttons to seek and set everything, it can be fiddly. Overall, this is one tough watch that is more than it has a right to be. Great value for the money at this low price point.
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Reviewed in the United States on June 19, 2025
Z
Verified Purchase
Zesty
Fort Morgan, US
★★★★★ 4
A classic, but you need your eyes checked.
Color: Brown/Green/Tan
Looks good for those looking for classic function over flashy. I wanted this watch for the simple analogue time but also for digital features like alarm / date / chrono. I just can't see as well as I used to. If this watch was available in the 42mm range, I'd upgrade in a second. Indiglo and water resistance is awesome as always.
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Reviewed in the United States on March 26, 2026
W
Verified Purchase
WorldTraveler
Port Orchard, US
★★★★★ 5
Timex - NEVER stop making this watch
Color: Brown/Green/Tan
This is my 5th or 6th Expedition watch in this model. This is the best watch in the world! Why? I travel a lot and do pro bono work in various foreign countries. This watch is not fancy and you won't have anyone chopping your arm off to get a it vs what will happen to you if you have a Rolex or some fancy-smancy Swiss snob watch. You can have three time zones on this watch because there is the analog and two digital. When i travel I always keep my home time zone in T2, which is set via the international time clock to the second (easy to do). So, if I go to Joberg or Shanghai I can easily switch the analog to the local time and put T1 as the date and digital time. I hope they never stop making this watch. I went to two stores in my town and could not come close to finding it. Timex has gone to these ginchy watches that are useless and cheap. My plan is to buy two more and store them. This watch can take a real beating. I put mine on and almost never take it off. One I had lasted 10 years with two battery changes. My latest one had the dial pin pop out in my hand when I pulled on it..gently. In other cases the menu pins stopped working. In most cases under constant wear they are good for 4 years. I have looked at G-Shocks.... that watch line defines silliness to me. They are too bulky at the wrist. This Timex is simple and awesome.
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Reviewed in the United States on July 25, 2014

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