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The Ollech & Wajs OW M-110 AS pairs a compact, vintage-inspired diver case with a stated 300 m water-resistance rating, a Soprod-based automatic movement and military-inspired dial details. Its strongest case is the combination of those specifications with its 39.56 mm diameter and canvas-and-leather strap; the main buying caveats are a published thickness discrepancy and prices and warranty terms that vary by market and date.
What the OW M-110 AS is
The OW M-110 AS is a mechanical dive watch with a skin-diver-style steel case, a matte gray dial and a bidirectional compass bezel. The AS model is supplied on a green canvas strap with leather backing. Its closely related M-110 M replaces that strap with a stainless-steel mesh bracelet.
The published specifications come from a hands-on review by Michael Stockton at Fratello and a 2025 Japanese distributor announcement. They are product and publication claims, not independent laboratory results. The two sources agree on several core features, but differ on the case thickness and describe the strap material differently.
Case size, fit and thickness
Fratello lists a 39.56 mm case diameter and 45.7 mm lug-to-lug measurement. Those dimensions make the watch a relatively compact option on paper for a 300 m-rated diver, though wrist fit also depends on wrist shape, strap and personal preference.
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- Swiss Made men’s field watch powered by Swiss automatic Sellita SW 220-1 movement with day-date display.
- 44mm 316L stainless steel case with screw-in crown, fixed bezel, and sapphire crystal with anti-reflective coating for superior durability.
- Black dial with constant glow illumination and luminous orange hands ensures excellent readability in all lighting conditions.
- Genuine black rubber strap with secure buckle closure offers comfort and rugged performance for outdoor wear.
- Water resistant up to 200 meters (20 ATM), making it ideal for field adventures; includes manufacturer’s warranty and original Luminox packaging.
The thickness is unsettled in the available published specifications: Fratello gives 14 mm, while the Japanese distributor lists 12.5 mm alongside a 39.5 mm diameter. These figures should not be treated as interchangeable or resolved into a single definitive measurement. If case height matters for a cuff or fit, confirm the measurement for the specific market and listing before buying.
Stockton reports that the strap conformed to his wrist after a few minutes and describes the watch as comfortable. He writes, “With its moderate dimensions, the OW M-110 AS is very comfortable on the wrist.” That is his hands-on impression, not a guarantee that the watch will fit every wrist the same way.
Rank #2
- AUTOMATIC MOVEMENT: Swiss H-10 movement with 80-hour reserve ensures consistent performance. Experience precision that matches both daily tasks and adventures, a testament to Swiss craftsmanship in automatic timekeeping.
- WATER RESISTANT TO 100M: Withstands 10 bar (100 meters), ideal for swimming and outdoor pursuits. Perfect for those who demand resilient accessories that accompany them confidently on their explorative journeys.
- BUILT FOR ADVENTURE: Featuring a 38mm stainless steel case, a black dial and leather strap, this watch combines durability and functionality. With Super-LumiNova and sapphire crystal, it’s ready to tackle your outdoor challenges.
- PREMIUM MATERIALS: Leather strap with pin buckle offers day-long comfort. The clean lines and sophisticated design make it the perfect accessory for both casual wear and formal attire, merging functionality with fashion.
- RICH HERITAGE: Over a century of Hamilton's legacy in field watches, admired for precision. Originally designed for WWI soldiers, these timepieces combine rugged durability with history, showcasing Hamilton's commitment to quality and innovation.
Dial, legibility and bezel
The matte gray dial uses steel, white and light-green details. According to Fratello, three-minute periods after each quarter hour are highlighted in light green as a reference to military radio-silence practice. Super-LumiNova is applied to the hands and markers. Stockton found the display easy to read and visually restrained enough for casual and business-casual clothing.
The bidirectional compass bezel adds an outdoors-oriented feature to the design. Stockton noted that he would have preferred a luminous “N” for timing use; the review does not describe the bezel as having a luminous north marker. A compass bezel is not a substitute for a dedicated timing scale, so buyers who want a conventional elapsed-time dive bezel should check whether this layout suits their use.
Rank #3
- AUTOMATIC MOVEMENT: Swiss H-10 movement with 80-hour reserve ensures consistent performance. Experience precision that matches both daily tasks and adventures, a testament to Swiss craftsmanship in automatic timekeeping.
- WATER RESISTANT TO 100M: Withstands 10 bar (100 meters), ideal for swimming and outdoor pursuits. Perfect for those who demand resilient accessories that accompany them confidently on their explorative journeys.
- BUILT FOR ADVENTURE: Featuring a 42mm stainless steel case, a blue dial and leather strap, this watch combines durability and functionality. With Super-LumiNova and sapphire crystal, it’s ready to tackle your outdoor challenges.
- PREMIUM MATERIALS: Leather strap with pin buckle offers day-long comfort. The clean lines and sophisticated design make it the perfect accessory for both casual wear and formal attire, merging functionality with fashion.
- RICH HERITAGE: Over a century of Hamilton's legacy in field watches, admired for precision. Originally designed for WWI soldiers, these timepieces combine rugged durability with history, showcasing Hamilton's commitment to quality and innovation.
Movement and stated performance
The watch is listed with the Soprod Newton Precision automatic movement, based on the P092. Fratello says it supports hand-winding and hacking seconds, runs at 28,800 vibrations per hour, has 23 jewels and provides a 44-hour power reserve. The review also reports five-position adjustment and an accuracy figure of ±5 seconds per day.
Those accuracy and adjustment figures are claims reported by the review, not independent long-term measurements of this particular watch or a guarantee of how an individual example will perform. The stated functions and reserve give a useful specification baseline, but they do not establish real-world timekeeping over extended wear.
Rank #4
- AUTOMATIC MOVEMENT: Swiss H-10 movement with 80-hour reserve ensures consistent performance. Experience precision that matches both daily tasks and adventures, a testament to Swiss craftsmanship in automatic timekeeping.
- WATER RESISTANT TO 100M: Withstands 10 bar (100 meters), ideal for swimming and outdoor pursuits. Perfect for those who demand resilient accessories that accompany them confidently on their explorative journeys.
- BUILT FOR ADVENTURE: Featuring a 42mm stainless steel case, a black dial and leather strap, this watch combines durability and functionality. With Super-LumiNova and sapphire crystal, it’s ready to tackle your outdoor challenges.
- PREMIUM MATERIALS: Leather strap with pin buckle offers day-long comfort. The clean lines and sophisticated design make it the perfect accessory for both casual wear and formal attire, merging functionality with fashion.
- RICH HERITAGE: Over a century of Hamilton's legacy in field watches, admired for precision. Originally designed for WWI soldiers, these timepieces combine rugged durability with history, showcasing Hamilton's commitment to quality and innovation.
Water resistance and construction
Both cited sources list 30 ATM, equivalent to a stated 300 m water-resistance rating. Fratello specifies a 316L stainless-steel case, sapphire crystal with antireflective treatment, and screw-down crown and case back; the Japanese announcement also specifies sapphire crystal with anti-glare treatment. These published details suggest substantial dive-watch construction, but the sources do not establish a separate certification or provide independent pressure-test results.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.AS strap versus M mesh bracelet
| Version | Published configuration | What to consider |
|---|---|---|
| OW M-110 AS | 20 mm green canvas strap with leather backing, according to Fratello; the Japanese announcement describes hemp and leather. | Choose it for the fabric-strap look and feel. The sources differ in their wording for the fabric, so confirm the exact supplied material with the seller. |
| OW M-110 M | Stainless-steel mesh bracelet, according to both cited sources. | It is the bracelet alternative; the Japanese announcement lists a different price from the AS version. |
The listed strap width is 20 mm. That helps when considering replacement straps, but width alone does not confirm compatibility with a particular strap’s end shape, thickness or hardware.
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Best Value
- Swiss Made men’s field watch powered by Swiss automatic Sellita SW 220-1 movement with day-date display.
- 44mm 316L stainless steel case with screw-in crown, fixed bezel, and sapphire crystal with anti-reflective coating for maximum durability.
- Black dial with constant glow illumination and luminous orange hands ensures clear readability in all lighting conditions.
- Genuine black leather strap with secure buckle closure offers classic style and comfortable fit for everyday and outdoor wear.
- Water resistant up to 200 meters (20 ATM), built for rugged adventures; includes manufacturer’s warranty and original Luminox packaging.
Published prices and warranty terms
The reported prices are historical, market-specific snapshots rather than verified current offers. They are not directly comparable across currencies, dates or retail channels.
| Source and market | Published price | Published warranty | Timing |
|---|---|---|---|
| Fratello review | CHF 1,456 | Three years | Reported in the October 21, 2023 review. |
| Japanese distributor announcement | JPY 286,000 for M-110 AS; JPY 319,000 for M-110 M | Two years | Japanese market announcement in 2025; models announced from August 2025. |
Neither source establishes the OW M-110 AS’s current 2026 price or warranty in every market. Check a current local quote and confirm the seller, taxes, exact variant and applicable warranty before comparing it with another watch. Fratello mentions a similar-looking Seiko SPB diver, but the available information does not provide a like-for-like total-cost comparison.
Quick Recap
Who should consider it?
- Consider it if you want a steel, 300 m-rated mechanical diver with a modest stated diameter, a distinctive compass bezel and a fabric strap rather than a bracelet.
- Look closely at fit if you are sensitive to thickness or need a watch to slide under a close-fitting cuff; published thickness figures differ by 1.5 mm.
- Check the details if a conventional timing bezel, a luminous north marker, a specific strap fabric or independently verified accuracy is essential to your decision.
- Compare current offers carefully: the available CHF and JPY figures are dated snapshots from different markets, not current universal pricing.
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
