The Tudor Black Bay Chrono S and G (Ref. 79363N) is one of those watches that looks slightly overdressed and slightly sporty at the same time, in the best way. The gold details warm it up, the chrono keeps it honest, and the whole thing has that Tudor confidence where it does not try to be anything else.
It is also the kind of watch that changes personality fast with the right strap. Some combinations make it feel like a modern daily beater. Others lean into the two-tone vibe and make it look way more expensive than it has any right to.
Strap size and fit, so you do not order the wrong one
Your Tudor Black Bay Chrono S and G 79363N comes in a 41mm case with a 22mm lug width. That 22mm measurement is the key. If you accidentally order 20mm, it will look wrong and it will not sit correctly.
When you are on the Helvetus product pages, the most important part is the selection dropdown. For this watch, you must select Black Bay Chrono on the product page. Not “Black Bay” in general, not “Black Bay 41”, not “Heritage”. Black Bay Chrono. That one choice is what ensures the strap is shaped and sized for the Chrono case properly.
If you remember only one thing, make it this: 41mm case, 22mm lugs, select Black Bay Chrono.
Best strap choices for the Black Bay Chrono S and G
With the S and G, I like straps that either calm the watch down or deliberately lean into the two-tone charm. Sitting in the middle usually looks confused.
Black rubber is the safe answer, but safe in a good way. The black strap anchors the dial and bezel, and it makes the gold accents feel like details rather than the whole story. It is also the most “wear it anywhere” setup, especially if you rotate between casual and smarter outfits without thinking too hard.
Black: Black Tudor Black Bay Strap
If you want the watch to look sharper and more intentional, the Black/White LuxLine® option is the one I keep coming back to. That white line gives the Chrono a slightly more modern, almost motorsport edge. It also plays nicely with the watch’s polished surfaces, so the whole setup feels clean instead of heavy. This is the strap I would pick when you want the Chrono to stand out, but not scream.
Black/White LuxLine®: Black/White LuxLine Tudor Black Bay Strap
And then there is yellow. On paper it sounds loud. In reality, on the 79363N it can look surprisingly “right” because the gold accents and warm tones are already in the design language. Yellow turns the watch into a summer chrono instantly. It is the kind of strap you wear on purpose, with confidence, and it rewards you for it.
Yellow: Yellow Tudor Black Bay Strap
If you want to browse beyond these picks, it is worth looking through the full Tudor Black Bay range because the Chrono handles more colors than most people expect, especially once you see them on-wrist. You can find the full selection here: All Tudor Black Bay Rubber Straps
Buying the right strap from Helvetus, without overthinking it
The easiest way to get this right is to start from a strap you genuinely like visually, then make sure the fit details match the watch. For the Black Bay Chrono S and G 79363N, that means sticking to 22mm and choosing Black Bay Chrono on the product page. Do that, and you are in the clear.
From there, it is just style preference. Black if you want timeless and versatile. Black/White LuxLine® if you want a crisp, modern edge. Yellow if you want the Chrono to feel fun again.
Closing thoughts
A watch like the Black Bay Chrono S and G deserves a strap that fits the case properly and looks like it belongs there. That is the whole point. With Helvetus, you get a strap designed specifically for this Tudor model, backed by a lifetime warranty, delivered with free worldwide shipping and no import costs. And you are not taking a gamble on some random fit either, these are straps trusted by 30,000+ customers worldwide. Pick the look you want, select Black Bay Chrono, and you are done.
