TUDOR
Ref. M79603-0002
Black Bay One 31mm S&G
Ref. M79603-0002
The TUDOR Black Bay 31 combines contemporary Swiss watchmaking with sophisticated, versatile styling. Housed in a 31mm stainless steel case with polished and satin-brushed finishes, this elegant timepiece features a silver-coloured dial complemented by an 18ct yellow gold bezel, creating a refined two-tone design inspired by the iconic Black Bay collection.
Powered by the COSC-certified Manufacture Calibre MT5201, the automatic movement delivers a power reserve of approximately 50 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 and yellow gold 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 | M79603-0002 |
| Product Type | Watch |
| Collection | Black Bay |
| Sub-collection | Black Bay One |
| Case Diameter | 31mm |
| Case Material | Stainless Steel & Yellow Gold |
| Dial Colour | Silver |
| Crystal | Sapphire |
| Strap Type | Bracelet |
| Clasp Type | T-Fit Clasp |
| Strap Material | Stainless Steel & 18K Yellow Gold |
| Movement | Manufacture Calibre MT5201 (COSC) |
| Power Reserve | 50 Hours |
| Water Resistance | 100m / 330ft |
| Warranty | 5 Years |
| Michael Spiers ID | 007-291 |
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 31mm S&G
Tell us the ring size you need below and our team will come back to you.