Specifications
A concise reference view of the case, dial, bracelet and movement details buyers compare first.
Case
| Diameter | 41 mm |
|---|---|
| Thickness | 14.7 mm |
| Lug width | 22 mm |
| Shape | Round |
| Material | steel |
| Bezel | Unidirectional |
| Bezel material | Stainless Steel |
| Crown | Screw-Down |
| Crystal | Domed sapphire crystal |
| Water resistance | 20 bar / 200 m |
| Water Resistance Category | Dive |
Functions and complications
| Complications | Power Reserve |
|---|---|
| Complication count | 1 |
| Dive watch | Yes |
Reference details
| Gender | Men's |
|---|---|
| Production status | Active |
| Origin | Switzerland |
| Warranty | 5 years |
| Size category | Large |
Dial and bracelet
| Dial | Black |
|---|---|
| Dial finish | Satin |
| Display | Analog |
| Lume | Super-LumiNova |
| Luminous display | Yes |
| Bracelet | Bracelet |
| Bracelet material | yellow gold |
| Strap material | Yellow Gold |
| Strap color | Gold |
| Clasp | Folding Clasp |
Movement
| Calibre | Tudor Calibre MT5612 |
|---|---|
| Calibre family | MT56xx |
| Movement | automatic |
| Power reserve | 70 hours |
| Frequency | 28,800 vph |
| Jewels | 26 jewels |
| Stop Seconds | Yes |
| In House Movement | Yes |
Additional details
| Bezel Material Original | steel |
|---|
Recent price movement
Tracking 5 daily market snapshots since July 2026. The solid line shows the median delivered estimate and the dashed line tracks the lowest available offer.
About this reference
In reference M79733N-0008, the Tudor Black Bay's 41 mm stainless-steel case is paired with a black satin dial and unidirectional steel bezel. The yellow-gold bracelet supplies the defining contrast, while sapphire crystal, a screw-down crown and 200-metre water resistance preserve the model's capable dive-watch identity. At 14.7 mm thick, it has a notably assertive case profile.
The automatic MT5612 calibre winds in both directions and allows hand-winding, with an instantaneous date mechanism. Its 31.8 mm diameter and 6.5 mm height accommodate 26 jewels, a silicon hairspring and a free-sprung variable-inertia balance held by a traversing bridge. Operating at 28,800 vph, the COSC Chronometer is regulated by Tudor to -2/+4 sec/day and provides 70 hours of reserve.








