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ROLEX BLOG

Night Diver: Tudor Heritage Black Bay Dark

April 8, 2019

BY Celine Simon

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If you like the blacked-out sports watch look, then the Tudor Heritage Black Bay Dark may be right up your alley. Less expensive than full black ceramic watches, this factory black PVD coated steel Tudor dive watch is a modern take on the brand’s vintage-inspired diver collection.

Black Bay Dark

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The Design of the Tudor Heritage Black Bay Dark

At first glance, the Tudor Heritage Black Bay Dark (ref. M79230DK-0006) looks a lot like a Rolex Submariner. That’s because the history of the vintage Tudor Submariner followed the path of its sibling, the vintage Rolex Submariner, very closely.

What we have here is a 41mm steel case finished with a black Physical Vapor Deposition (PVD) coating. On top of the case sits a unidirectional rotating steel bezel, also PVD-coated, and fitted with a black anodized aluminum insert. The bezel includes a red inverted triangle with a luminous pearl at 12 o’clock, along with 60-minutes markings (the first 15 minutes in full, followed by 5-minute intervals).

Black Bay Dark

While the modern Tudor Heritage Black Bay Dark is notably larger than the 37mm Tudor Sub ref. 7924 from 1958, it does borrow the “big crown” from that vintage model. As a contemporary watch, the winding crown screws down onto the case to create a waterproof barrier. The engraved rose – a Tudor emblem – on the winding crown is a nice design touch.

Also note the red text on the dial, which is another throwback to vintage Rolex/Tudor divers. And finally, there are also the “Snowflake” style hands, which are yet again, taken from older Tudor dive watches, but from the 1970s. Along with the luminous hands, there are also the dozen lume-filled hour markers offering plenty of visibility in the dark.  

This particular Black Bay Dark is equipped with a gray fabric strap, although Tudor does also offer the option of a PVD-coated steel bracelet or a black leather strap too. The fabric watch strap is secured to the wrist via a matching black PVD-coated steel deployant clasp. In true Tudor form, the clasp is comfortable and durable.  

Black Bay Dark

Tudor Manufacture Caliber MT5602

In 2015, Tudor announced their first in-house movement, the MT5621, which made its debut in the North Flag models. The MT5602 caliber is a variant of that manufacture movement made especially for the Black Bay models.

COSC-certified, the automatic MT5602 movement that drives the hour, minute, and seconds hands of the Heritage Black Bay Dark offers the wearer a generous 70-hour power reserve. Tudor’s MT5602 caliber beats to a frequency of 28,800 bph (4Hz), and it is regulated by a variable inertia oscillator fitted with a silicon hairspring, which fares better against temperature swings, shocks, and magnetism than other materials.

All in all, it is a well-made modern mechanical movement that has the added cachet of being made in-house. The movement is hidden away beneath the solid screw-down caseback of the watch, and the Black Bay Dark is water resistant to 200 meters.

Black Bay Dark

With a well-proportioned case size, a striking blacked-out design punctuated with white and red accents, and an in-house movement, the Tudor Heritage Black Bay Dark checks off plenty of boxes. Couple that with its relatively affordable price tag, and you’ve got a solid option for a modern high-quality dive watch from a booming watch brand.

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