In short. The SUB MOD is an automatic dive watch with a rotating bezel, a genuine Japanese NH35 automatic movement, sapphire crystal and Pepsi, black or white colorways. It is hand-assembled in France, with a 2-year warranty and an enhanced water-resistance option.
The SUB MOD has become French enthusiasts' favourite gateway into automatic watchmaking. In this guide, we explain what it really is, how much it costs and how to choose between Pepsi, black and white. With more than 1,000 watches assembled and delivered, our workshop knows what matters at the moment of purchase.
A SUB MOD is an automatic dive watch built around a genuine Japanese NH35 movement, hand-assembled with a 316L steel case, a sapphire crystal and a rotating bezel.
What exactly is a SUB MOD watch?
The principle is simple. A workshop starts from a Japanese watch mechanical base, the NH35 movement (the watch's automatic engine, robust and repairable anywhere), then dresses it with components chosen one by one: case, dial, hands, bezel, bracelet. The result is called a mod, for modification. When the design draws on the most famous diver in the world, we speak of a SUB MOD watch.
The difference with a counterfeit? Total. A SUB MOD owns what it is: no usurped brand, an authentic movement, an invoice and a written warranty. We covered this point in detail in our comparison watch mod vs luxury watch.
A workshop anecdote illustrates this choice well. Last year, a customer was hesitating between a replica found on a dubious site and a mod. He asked us twenty questions. He ended up choosing transparency. His watch is still running, and he knows exactly what he wears on his wrist.
Concretely, here is what a good SUB MOD contains:
- Genuine Japanese NH35 movement: automatic, 41 hours of power reserve, renowned for its reliability.
- 316L stainless steel case: the same steel as luxury dive watches.
- Sapphire crystal: almost impossible to scratch in everyday use.
- Unidirectional rotating bezel (the graduated ring used to measure immersion time).
- 3-link bracelet in steel with flat links, the classic diver aesthetic.
Watch mod Pepsi, black or white: which SUB MOD to choose?
Three versions account for almost all the demand, and each has its own personality.
A little history first. The two-tone blue and red bezel, nicknamed Pepsi, was born in the 1950s for airline pilots: two colours to distinguish day and night hours at a glance during long-haul flights. Seventy years later, the watch mod pepsi remains the most ordered version in our workshop.
| Version | Style | For whom? | Ideal use |
|---|---|---|---|
| Pepsi (blue and red) | Vintage, GMT spirit | Those who want the icon | Every day, bold look |
| Black diamond | Sober and dressy | Lovers of discretion | Office, suit, evening |
| White | Bright, summery | Legibility first | Summer, light outfits |
Our advice? If this is your first automatic, go for the Pepsi. It is the most iconic, the one that draws compliments. The black diamond will suit you better if your daily life is more suits and meetings. The white, for its part, can be read in a split second in full sunlight.
👉 Discover the SUB MOD Pepsi with 2-year warranty ($349): each piece is assembled to order in our workshop, allow a few days before shipping, then free tracked shipping delivered in 10-14 days.
5 ATM water resistance, sapphire crystal, 316L steel: the real quality criteria
This is buyers' number one fear, and it is legitimate. A modified watch has been opened, so its gaskets have been handled. Badly reassembled, it takes on water. Well assembled and tested, an NH35 automatic dive watch handles swimming and the shower without any problem.
Here are the points that separate a serious SUB MOD from a botched assembly:
- New, greased gaskets at the case back and the crown (the setting knob on the side).
- Sapphire crystal press-fitted with its sealing gasket, not simply glued.
- 5 ATM water resistance verified in real conditions, not just claimed on the product page.
- Functional rotating bezel, with crisp clicks and no excessive play.
At HORAMOD, every watch goes through a workshop quality test before shipping: movement, finishes and crown are all checked. You can also add a 5 ATM pressure-chamber water resistance test, available as an option at checkout, to head off on holiday with peace of mind. To understand exactly what your watch can handle, pool included, read our dedicated article Waterproof watch mod: can you really wear your watch in water?
The SUB MOD market ranges from $250 to $450. Why such gaps for watches that look alike in photos? Three main reasons:
- The crystal: genuine sapphire, or mineral glass that scratches within weeks.
- The assembly: a watch assembled in France by an identifiable artisan, or a dropshipped parcel sent from Asia with no inspection.
It is another universe, and we will never tell you otherwise. The pleasure-to-price ratio is hard to beat.
With us, the SUB MOD starts at $339 in Pepsi, black diamond or white. Fancy a different dial or hands?
Where to buy your SUB MOD in France with complete confidence?
Buying a $300 watch online calls for a minimum of checks. Here is the list we would apply ourselves:
- An identifiable workshop, with an address in France and a face behind the shop.
- A written warranty: ours covers the movement, the finishes and the components for 2 years.
- Published, verifiable customer reviews: HORAMOD displays 4.9/5 across 69 customer reviews published on the site.
- Shipping from France, not dropshipping from Asia with three weeks' wait and surprise customs fees.
- A reachable human after-sales service: with us, you write to a person, not a chatbot.
Taking your time is normal. Our job is to make sure the parcel lives up to the wait.
One last detail that changes everything for a gift: engraving. Text on the case back or a custom image (available as options at checkout), and your SUB MOD becomes a one-of-a-kind piece.
Frequently asked questions about the SUB MOD
What exactly is a SUB MOD?
It is an automatic dive watch hand-assembled around a genuine Japanese NH35 movement, with a 316L steel case, sapphire crystal and rotating bezel. Every component is chosen and fitted by an assembler, here in our French workshop.
Is a SUB MOD waterproof enough for swimming?
Yes, provided the gaskets have been correctly fitted and the water resistance has been tested after assembly. A watch certified 5 ATM handles swimming and the shower. At HORAMOD, a workshop quality test precedes every shipment and a pressure-chamber water resistance test is available as an option at checkout.
What is the price of a quality SUB MOD?
Expect between $250 and $450 depending on the movement, the crystal and the place of assembly. Below $250, be wary: cloned movement, mineral glass and no after-sales service. Our SUB MOD is offered from $339 with a 2-year warranty, and the made-to-measure configurator at $339.
Yes, completely. A dive watch design (graduated bezel, dial with round indices) belongs to no one. What is illegal is reproducing a registered logo or brand name. A mod displays no luxury brand logo: you are buying an openly assumed watchmaking creation, with an invoice and a warranty.
A counterfeit imitates a brand to deceive, with no warranty or traceability, and buying one exposes you legally. A mod claims what it is: identified components, genuine Japanese movement, reachable seller. Our 4.9/5 across 69 reviews published on the site testify to this transparency, unverifiable with a counterfeiter.
A word from the workshop
The SUB MOD ticks a rare box: the charm of an icon, the mechanics of a true automatic and a price that remains reasonable. Pepsi for boldness, black diamond for elegance, white for clarity. In every case, insist on a sapphire crystal, an authentic NH35 movement and a serious water resistance test. More than 1,000 watches assembled and delivered have confirmed one thing for us: it is the rigour of the assembly that makes the difference, not the photo on the product page.
Order your SUB MOD Pepsi assembled and tested in the workshop, or browse all our models before your favourite version sells out.
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