The Heritage Chrono is the watch that started everything. Before the Black Bay, before the Pelagos, Tudor launched this in 2010 as the first piece in its Heritage line — a modern take on the 1970s Monte Carlo chronographs, and the watch that told everyone the brand was serious again.
It is also the Tudor most likely to be sitting in a box with the wrong thing on it, because what came in that box depends entirely on which version you bought.
Strap size and fit guide
Your Tudor Heritage Chrono (Ref. 70330N) has a 42mm case and a 22mm lug width, on standard spring bars.
There is a neat way to confirm that without a ruler: the Heritage Chrono's factory bracelet carries reference 95740 — the same bracelet reference Tudor fitted to the original Heritage Black Bay. Same part, same width. If you have ever bought a strap for a 41mm Black Bay, it is the same 22mm.
The blue-dial 70330B is identical in this respect: 42mm, 22mm, standard bars.
Because the Heritage Chrono is a discontinued line rather than a current one, there is no model-specific cut for it in our Tudor range. What that means in practice: order 22mm from any of our universal ranges and it will fit correctly. There is no fitting quirk on this watch — no fixed bars, no proprietary end links, no curved-only requirement. Standard 22mm, standard bars.
Checklist: 42mm case, 22mm lugs, standard spring bars.
Check which version you own — it changes what you actually need
This is the part worth knowing before you spend anything, and almost nobody mentions it.
The Heritage Chrono's sub-references changed in 2018, and Tudor split what used to be one box into two:
| Sub-reference | What came in the box |
|---|---|
| -0001 (grey dial) / -0002 (black dial) | Steel bracelet and a strap |
| -0006 / -0005 (from 2018) | Steel bracelet only |
| -0004 / -0003 (from 2018) | Fabric strap only — no bracelet |
So three different owners are in three different positions. If you have a pre-2018 example you already own a spare and you are shopping for variety. If you have a -0005 or -0006 you have a bracelet and nothing else. And if you have a -0003 or -0004 you have a single fabric strap and no metal to fall back on at all — which makes a second strap less of an upgrade and more of a necessity.
Check your papers or the sticker on the case back. It is a thirty-second job and it decides whether you are buying a second option or a first one.
The orange ring is the whole design — and it sits right against your strap
The Monte Carlo nickname did not come from a racing circuit. It came from the 1970s originals, whose multi-coloured concentric registers looked so much like the zones of a roulette table that collectors stopped using the reference numbers.
On the modern one, that survives as two things: an orange chronograph seconds hand, and — more importantly — an orange minute chapter ring running right around the outside of the dial.
That second detail is the one that matters here. Most watches with a colour accent put it somewhere in the middle: a hand, a date, a bezel triangle. The Heritage Chrono's orange is at the outer edge of the dial, which is the part physically closest to your lugs. Whatever strap you fit sits directly against a ring of orange, with only a few millimetres of case between them.
Which means you cannot ignore it the way you can ignore a coloured hand. Every strap on this watch is having a conversation with that ring whether you planned it or not.
Three things follow, and they are the whole colour brief:
- Warm straps continue it. Brown, tan and anything in that family read as an extension of the orange rather than a second colour.
- Black gets out of its way. With a black strap the orange ring becomes the only colour in the frame, which is the cleanest look and the safest choice.
- Blue fights it. There is a blue Heritage Chrono — the 70330B — precisely because blue and orange is a deliberate scheme. On the grey or black 70330N there is no blue anywhere for a blue strap to reference, so it reads as a third colour rather than a pair.
The rest is about material, and on a 42mm chronograph that matters more than usual.
The best straps for the Heritage Chrono 70330N
Straight-end FKM rubber — the hero. A 42mm chronograph with a rotating bezel and knurled pushers is a sports watch, and rubber is what sports watches wear. Straight-end suits this case better than a curved end does: the Heritage Chrono has a squarer, more angular Oyster-style case with chamfered lugs, and a straight end reads as deliberate against those flat surfaces rather than trying to hug a curve that is not really there. In black, it lets the orange ring do all the talking. Our straight-end range covers 20mm, 22mm and 24mm, so 22mm is right there. Straight-End FKM Rubber Straps — 20mm, 22mm, 24mm
Sailcloth — the one that suits a racing chronograph. Sailcloth gives you texture without adding a colour, which is exactly what a dial with four concentric zones needs. It has the technical, woven look that suits a motorsport-derived watch, it is far more water-tolerant than leather, and it sits between rubber and leather in formality — so it is the strap that makes the Heritage Chrono work on a normal Tuesday rather than only at a weekend. If you want one strap that covers the widest range of situations, this is it. Sailcloth Watch Straps — choose 22mm
Brown leather — the period-correct answer. The watch this one is based on is a 1970s chronograph, and brown leather is where that decade lives. It also does the specific job described above: brown continues the orange chapter ring instead of competing with it, so the dial reads as one warm idea rather than a colour and a strap. Mid-brown is the versatile choice; a darker chocolate makes the grey-dial version look considerably more expensive than it is. Leather Watch Straps — choose 22mm
Alligator or black leather — the dress-up. The Heritage Chrono is 42mm and it is not subtle, but the case finishing is genuinely good — satin-brushed lug tops, polished flanks, chamfered edges — and a fine black leather or alligator brings that out in a way the bracelet never does. This is the version for a jacket. It is also the strap that most changes how the watch is read: on rubber it is a tool, on alligator it is a vintage-styled chronograph, and it is the same watch. Alligator Leather Watch Straps — choose 22mm
Everything else is here: All General Straps
Getting the order right
42mm, 22mm, standard spring bars. No model selection needed — just choose 22mm in whichever range you like.
If you own other Tudors:
- Tudor Black Bay Chrono 79360N Strap Guide — the Heritage Chrono's successor as Tudor's chronograph, 41mm and also 22mm
- Tudor Black Bay 41 Blue 79230B Strap Guide — 41mm, 22mm, and it shares the 95740 bracelet reference
- Tudor Black Bay Ceramic 79210CNU Strap Guide — 41mm, 22mm
FAQ
What lug width is the Tudor Heritage Chrono 70330N? 22mm, on a 42mm case with standard spring bars. The blue 70330B is the same.
Is it the same width as a Black Bay? Yes — the same 22mm as the 41mm Black Bay references, and it uses the same factory bracelet reference, 95740.
Does my Heritage Chrono come with a spare strap? It depends on the sub-reference. Pre-2018 examples (-0001 and -0002) shipped with both a bracelet and a strap. From 2018, Tudor split them: -0005 and -0006 are bracelet only, while -0003 and -0004 come on a fabric strap with no bracelet at all.
Which strap colour suits the orange dial ring? Brown continues it, black lets it lead. Avoid blue on the grey and black dials — there is nothing blue on the watch for it to reference.
Is there a model-specific cut for this watch? No. It is a discontinued reference, so order 22mm from any of our universal ranges — it has standard lugs and standard spring bars, so nothing special is required.
Final thoughts
The Heritage Chrono is the watch that proved Tudor could raid its own archive and come back with something better than a copy. Fifteen years later it is one of the best-value mechanical chronographs anyone makes, and the thing most likely to be holding it back is a bracelet its owner never really wanted.
Helvetus carries 22mm across rubber, sailcloth, leather and alligator, so whichever direction you take this watch, the width is covered. Shipping is free worldwide with no import costs, leather straps carry a one-year warranty and every rubber strap a lifetime warranty, and more than 50,000 customers have already made the swap.
