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A TUDOR Black Bay 31 wristwatch, featuring a black dial, gold hour markers, and a five-link silver metal bracelet, is displayed against a white background—highlighting the unisex chic style of this model.
The TUDOR Black Bay 31 is a unisex chic stainless steel watch with a black dial and silver-gold hour markers, inspired by the refined Black Bay line and showcased on a bold red and black geometric background.
The TUDOR Black Bay 31 unisex wristwatch features a stainless steel case, black dial with gold hour markers, and a jubilee bracelet—shown here on an elegant black and metallic textured background.
A TUDOR Black Bay 31 unisex watch with a metal band is showcased upright in an open black presentation box featuring the TUDOR logo inside the lid, highlighting the refined elegance of Black Bay models.
The TUDOR Black Bay 31, a stainless steel wristwatch with a black dial, gold markers, and a silver link bracelet, is shown against a white background—an effortlessly chic unisex watch powered by Manufacture Calibres.
The TUDOR Black Bay 31 is a unisex chic stainless steel watch with a black dial, gold hour markers, diamond accents, and a silver bracelet—reflecting the elegant style of the Black Bay collection.
Close-up of a brushed stainless steel clasp with TUDOR’s shield logo, featured on the unisex Black Bay 31 watch, known for its Manufacture Calibre.
The TUDOR Black Bay 31 is a unisex silver wristwatch with a black dial and metal link band, shown worn over a cream-colored sweater.
The TUDOR Black Bay 31 is a chic unisex watch with a stainless steel bracelet, black dial, gold accents, and round hour markers—shown stylishly against a white background.
A TUDOR Black Bay 31 wristwatch, featuring a black dial, gold hour markers, and a five-link silver metal bracelet, is displayed against a white background—highlighting the unisex chic style of this model.
The TUDOR Black Bay 31 is a unisex chic stainless steel watch with a black dial and silver-gold hour markers, inspired by the refined Black Bay line and showcased on a bold red and black geometric background.
The TUDOR Black Bay 31 unisex wristwatch features a stainless steel case, black dial with gold hour markers, and a jubilee bracelet—shown here on an elegant black and metallic textured background.
A TUDOR Black Bay 31 unisex watch with a metal band is showcased upright in an open black presentation box featuring the TUDOR logo inside the lid, highlighting the refined elegance of Black Bay models.
The TUDOR Black Bay 31, a stainless steel wristwatch with a black dial, gold markers, and a silver link bracelet, is shown against a white background—an effortlessly chic unisex watch powered by Manufacture Calibres.
The TUDOR Black Bay 31 is a unisex chic stainless steel watch with a black dial, gold hour markers, diamond accents, and a silver bracelet—reflecting the elegant style of the Black Bay collection.
Close-up of a brushed stainless steel clasp with TUDOR’s shield logo, featured on the unisex Black Bay 31 watch, known for its Manufacture Calibre.
The TUDOR Black Bay 31 is a unisex silver wristwatch with a black dial and metal link band, shown worn over a cream-colored sweater.
The TUDOR Black Bay 31 is a chic unisex watch with a stainless steel bracelet, black dial, gold accents, and round hour markers—shown stylishly against a white background.
A TUDOR Black Bay 31 wristwatch, featuring a black dial, gold hour markers, and a five-link silver metal bracelet, is displayed against a white background—highlighting the unisex chic style of this model.
The TUDOR Black Bay 31 is a unisex chic stainless steel watch with a black dial and silver-gold hour markers, inspired by the refined Black Bay line and showcased on a bold red and black geometric background.
The TUDOR Black Bay 31 unisex wristwatch features a stainless steel case, black dial with gold hour markers, and a jubilee bracelet—shown here on an elegant black and metallic textured background.
A TUDOR Black Bay 31 unisex watch with a metal band is showcased upright in an open black presentation box featuring the TUDOR logo inside the lid, highlighting the refined elegance of Black Bay models.
The TUDOR Black Bay 31, a stainless steel wristwatch with a black dial, gold markers, and a silver link bracelet, is shown against a white background—an effortlessly chic unisex watch powered by Manufacture Calibres.
The TUDOR Black Bay 31 is a unisex chic stainless steel watch with a black dial, gold hour markers, diamond accents, and a silver bracelet—reflecting the elegant style of the Black Bay collection.
Close-up of a brushed stainless steel clasp with TUDOR’s shield logo, featured on the unisex Black Bay 31 watch, known for its Manufacture Calibre.
The TUDOR Black Bay 31 is a unisex silver wristwatch with a black dial and metal link band, shown worn over a cream-colored sweater.

TUDOR Black Bay 31

M79600-0004 31 mm
View Specs
Regular price $4,825
Starting at /mo or 0% APR with Affirm .
Authorized Luxury Retailer
Rolex green flag outside the Watches of Switzerland store with cream columns and large windows.

Renowned for expertise in luxury watch retail, Watches of Switzerland embodies the highest standards of craftsmanship and service. With a history dating back to the 1700s, the company offers a curated selection of premier timepieces and commits to excellence in customer experience grounded in a legacy of trust and industry proficiency.

Authorized Luxury Retailer

Authorized Luxury Retailer

We are an authorized retailer for over 80 luxury watch brands.
Free Expedited Delivery
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Free Expedited Delivery on Orders $100 and Up (Estimated 1-3 Days)

Our secure shipping service operates Monday through Saturday, from 8:00 a.m. to 6:00 p.m. For security reasons, an adult signature is required for every delivery. Watches of Switzerland does not deliver to P.O. boxes or third-party forwarding services. For more information about delivery, click here. Tracking information will be made available upon shipping.

$15 Flat Fee on Orders Under $100 (Estimated 1 - 2 weeks)

Monday through Saturday, from 8:00 a.m. to 6:00 p.m. For more information about delivery, click here. Tracking information will be made available upon shipping.

If you have any questions or concerns regarding your order, please contact the Watches of Switzerland Client Services. 

Free Expedited Delivery

Free Expedited Delivery

We offer free, expedited delivery on all orders over $100.
Simple Easy Returns
customer service woman helping customer

Our commitment to you does not end at delivery. We offer the following return services to make your experience as pleasant as possible.

10-Day Returns For Timepieces:

Timepieces purchased online can be returned or exchanged within 10 days from when they are shipped or collected.

30-Day Returns For All Other Purchases:

All other online purchases can be returned or exchanged within 30 days from when they are shipped or collected.

On presentation of the original receipt, your purchases may be returned or exchanged at any of our store locations. Alternatively, you may elect shipping to our facility with all the original paperwork. All refunds must be credited to the same tender used for the original purchase. To return the online purchases through secure shipping service, please contact our client service team who will provide you the shipping label.

All returns or exchanges must be in new, unworn condition, with no scratches or markings, not sized or adjusted and in their original packaging and with warranty cards / certificated and instruction booklets.

Simple Easy Returns

Simple Easy Returns

Purchase with confidence with our simple, free return policy.

Details

The Black Bay One 31/36/39/41 models bring a unique aesthetic to the Black Bay One line. The curved cases feature a combination of finishes that elevates the watch in a contemporary fashion and offers a design language that slightly departs from the brand’s iconic tool watch spirit to embrace a sophisticated, versatile, unisex chic look and feel. Fitted with Manufacture Calibres these models are at the cutting edge of technical watchmaking refinement. All Black Bay One 31/36/39/41 models are available on a five link bracelet in 316L steel. It comes complete with a robust clasp in 316L steel with TUDOR “T fit” rapid adjustment system for on the fly size changes. Easy to use, requiring no tools and offering five positions, this practical system allows the wearer to carry out a fine, instant adjustment of up to 8mm on the clasp.

General

Condition

New

Brand

TUDOR

Reference

M79600-0004

Product Code

17771040

Power Reserve

50 Hours Approx

Features

Deployment clasp
Automatic movement
Waterproof

Case

Case Size

31 mm

Case Depth

9.5 mm

Case Shape

Round

Case Material

Steel

Bezel Material

Steel

Bezel Color

Silver

Crystal

Sapphire

Dial

Dial Color

Dark Grey

Dial Texture

Plain

Dial Markers

Diamond & Batons

Stone Set

Yes

Movement

Type

Auto

Bracelet

Type

Bracelet

Stone Set

No

Buckle

Deployment