Side by side

Tudor Black Bay One 31 S&GvsLongines MASTER COLLECTION

The numbers, the dial colors, the calibers — laid out so you can stop flipping between tabs.

Black Bay One 31 S&G
TudorBlack Bay One 31 S&G
MSRP $6,850
MASTER COLLECTION
LonginesMASTER COLLECTION
MSRP $6,350

At a glance

20 of 29 specs differ
Diameter
Black Bay One 31 S&G31mm
MASTER COLLECTION25.5mm
Power Reserve
Black Bay One 31 S&G50h
MASTER COLLECTION45h
Water Resistance
Black Bay One 31 S&G100m
MASTER COLLECTION30m
MSRP
Black Bay One 31 S&G$6,850
MASTER COLLECTION$6,350

Full specifications

Case

8 specs
Diameter
31mm
25.5mm
Thickness
9.5mm
9mm
Lug-to-Lug
46mm
30.6mm
Lug Width
17mm
13mm
Material
Stainless Steel
Gold
Finish
Polished + Satin
Water Resistance
100m
30m
Caseback
Solid screw-down
Transparent case back with sapphire crystal

Crystal & Dial

5 specs
Crystal Shape
Flat
AR Coating
Inner
Dial Color
Black
Silver
Indices
Applied
Painted Arabic numerals
Lume
None
Super-LumiNova

Movement

6 specs
Caliber
MT5201
L592.5
Power Reserve
50h
45h
Jewels
25
0
Hacking
Yes
No
Hand-winding
Yes
No
Complications
None
Hours, minutes, seconds and date

Pricing

1 specs
MSRP
$6,850
$6,350

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What people say

Owners + reviewers, side by side

Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.

Tudor Black Bay One 31 S&G

The Tudor Black Bay One 31 S&G is praised for its quiet luxury, combining brushed steel and warm gold accents for understated charm. Owners appreciate the brushed gold for a casual two-tone look and the champagne dial's surprising legibility. Some find the case sides too thick, and one user expressed a desire for a smaller S&G variant. The watch features the MT5612 movement with a 70-hour power reserve and a date function, within a 200-meter water-resistant case. Overall, owners and reviewers highlight the Tudor Black Bay One 31 S&G's balanced two-tone aesthetic as its primary appeal.

Longines MASTER COLLECTION

The Longines Master Collection is widely praised for its excellent value, with reviewers and owners citing its dressy aesthetic, good fit and finish, and attractive complications like annual calendars and chronographs for under $3,000. Owners highlight the beautiful dials, engraved numerals, and the L893 caliber's 72-hour power reserve. Some find the standard Master Collection thin and well-finished, while others note a slightly thicker case on certain models. A few owners express reservations about the bracelet's adjustment options and the homogeneity of the case finishing. One reviewer points out that the subdial can obscure the '7' numeral on the Small Seconds model, and another notes that pushers can feel cheap and the chrono hour counter may not reset perfectly. Water resistance is noted as 30m on some models.

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