Tudor Black Bay Pro M79470-0001

Imagen: Tudor, web oficial

The storyWhy this reference matters

In 2022 half the watch world was asking Tudor for the same thing: a Black Bay Fifty-Eight with a second time zone, 39 millimetres across, with a rotating burgundy-and-blue bezel. Tudor delivered the 39 millimetres and the second time zone, then did precisely the opposite of what had been asked. It fitted a fixed steel bezel, radially brushed, with the 24-hour scale engraved and filled in black, and a yellow hand. That vocabulary isn't Tudor's. It belongs to the first Rolex Explorer II, the 1655 of 1971.

The choice has practical consequences, not just aesthetic ones. With a fixed bezel you read the second zone off the case and that is where it ends: there is nothing to rotate for a third zone, which the Black Bay GMT does allow. What you get instead is a proper traveller's GMT. The MT5652 moves the hour hand in one-hour jumps, dragging the date with it and without stopping the watch, so you land, pull the crown, count out the clicks and you're done.

And then there is the thickness, which was the entire conversation that year. The MT5652 is a tall movement and, since it is the same one fitted to the 41 mm Black Bay GMT, the Pro comes out at an identical 14.6 mm on a case two millimetres narrower. It is the thickest 39 mm watch in the catalogue, and anyone who buys one knows it. The people who tried it on before giving an opinion tended to soften their tone considerably.

SpecificationsThe numbers, in one table

IdentificationHow to tell it apart

Fixed steel bezel, radially brushed, with a 24-hour scale engraved and filled in black; a domed black dial with a grained texture; monobloc ceramic luminous markers; a date at three with no cyclops; a yellow GMT hand tipped with a snowflake. Thirty-nine millimetres across, 14.6 thick, 47.2 lug to lug, 20 mm between the lugs and 200 metres of water resistance.

Against the Black Bay GMT, which is the usual mix-up: that one is 41 millimetres, has a bidirectional burgundy-and-blue rotating bezel, 22 mm lugs and a red GMT hand. They share the same calibre and the same thickness. Against the Fifty-Eight: the 58 has no GMT and is notably flatter. Quick rule — if the bezel doesn't turn it's a Pro; if it turns and it's two-tone, it isn't.

The last four digits only tell you the dial and the strap, never the model. Black dial versions start -0001, on the steel bracelet, and the pale opaline dial is the M79470-0004. If you see a Black Bay Pro with an off-white dial advertised as a -0001, something is wrong in the seller's listing.

CollectingWhat collectors check

Try it on. It's the dullest advice going and also the most useful: 14.6 mm of case on a 39 mm diameter and 47.2 lug to lug feel nothing like the catalogue photographs suggest, since the watch is always shot head-on there. A Black Bay Pro is judged in profile, and profile is precisely the view that never comes with a listing.

The fixed bezel is a blessing on the second-hand market: no click spring to tire, no aluminium insert to fade, no alignment to drift out over the years. The trade-off is that the top surface is a flat, radially brushed plane where any deep scratch or amateur polish shows from a metre away, and redoing a radial brush is not kitchen-table work.

Check two things on the movement before you pay: that the date flips at midnight and not at noon, which is the commonest setting error on a GMT, and that the yellow hand falls exactly on a marker of the 24-hour scale. A crooked or badly seated GMT hand is easy to spot and gives away careless assembly.

Common questionsWhat people ask us about this reference

Keep readingWhere to go from here

Close relativesThe ones it gets confused with