TUDOR
Ref. M79640-0005
Black Bay One 36mm
Ref. M79640-0005
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The TUDOR Black Bay 36 combines contemporary Swiss watchmaking with sophisticated, versatile styling. Housed in a 36mm stainless steel case with polished and satin-brushed finishes, this elegant timepiece features a striking deep blue dial adorned with sparkling diamond hour markers and a smooth stainless steel bezel, creating a refined interpretation of the iconic Black Bay collection.
Powered by the COSC-certified Manufacture Calibre MT5400, the automatic movement delivers an impressive power reserve of approximately 70 hours. Water-resistant to 100 metres, the watch combines precision and reliability with TUDOR’s renowned craftsmanship.
Completing the design is a five-link stainless steel bracelet with polished and satin-brushed finishes, secured by TUDOR’s innovative T-fit clasp. Offering convenient tool-free adjustment across five positions within an 8mm range, the bracelet ensures a comfortable and secure fit.
| Brand | TUDOR |
|---|---|
| Product Reference | M79640-0005 |
| Product Type | Watch |
| Collection | Black Bay |
| Sub-collection | Black Bay One |
| Case Diameter | 36mm |
| Case Material | Stainless Steel |
| Dial Colour | Blue |
| Crystal | Sapphire |
| Gemset | Diamond Index Dial |
| Strap Type | Bracelet |
| Clasp Type | T-Fit Clasp |
| Strap Material | Stainless Steel |
| Movement | Manufacture Calibre MT5400 (COSC) |
| Power Reserve | 70 Hours |
| Water Resistance | 100m / 330ft |
| Warranty | 5 Years |
| Michael Spiers ID | 007-448 |
Delivery is made by Royal Mail Special Delivery and should reach you within 1-3 working days, excluding Bank Holidays and weekends.
Size Guide
Choosing the right ring size ensures maximum comfort and the perfect fit. If you already own a ring that fits well, you can easily use it as a reference. Otherwise, follow the simple options below to find your correct size.
If you do not know your ring size, we recommend visiting one of our showrooms, where our friendly and knowledgeable team can help you find the right ring size for you.
Request an AppointmentUK Ring Size Chart
| Size | UK Size |
|---|---|
| 01 | B |
| 02 | D |
| 03 | E-F |
| 04 | F |
| 05 | F-G |
| 06 | G |
| 07 | H |
| 08 | I |
| 09 | J |
| 10 | J-K |
| 11 | K-L |
| 12 | L |
| 13 | M-N |
| 14 | N-O |
| 15 | O-P |
| 16 | P |
| 17 | Q |
| 18 | Q-R |
| 19 | R |
| 20 | S |
| 21 | S-T |
| 22 | T-U |
| 23 | U-V |
| 24 | V |
| 25 | W |
| 26 | X |
| 27 | X-Y |
Product Enquiry
Black Bay One 36mm
Tell us the ring size you need below and our team will come back to you.