Side by side

Tudor Black Bay One 31 S&GvsLongines FLAGSHIP CLASSIC

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
FLAGSHIP CLASSIC
LonginesFLAGSHIP CLASSIC
MSRP $1,800

At a glance

20 of 29 specs differ
Diameter
Black Bay One 31 S&G31mm
FLAGSHIP CLASSIC26mm
Power Reserve
Black Bay One 31 S&G50h
FLAGSHIP CLASSIC45h
Water Resistance
Black Bay One 31 S&G100m
FLAGSHIP CLASSIC30m
MSRP
Black Bay One 31 S&G$6,850
FLAGSHIP CLASSIC$1,800

Full specifications

Case

8 specs
Category
Dress
Diameter
31mm
26mm
Thickness
9.5mm
7.9mm
Lug-to-Lug
46mm
32.4mm
Lug Width
17mm
12mm
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
Underside
Dial Color
Black
Silver
Indices
Applied
Applied indexes
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
$1,800

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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 FLAGSHIP CLASSIC

Owners widely praise the Longines FLAGSHIP CLASSIC for its vintage-inspired design, impressive finishing for the price, and classic 38.5mm size, with many highlighting its slim and accurate movement. Some owners appreciate the rice grain bracelet and versatility for daily wear, while others single out the elegant hands and small seconds subdial. A few reviewers note the 3-bar water resistance and closed case back as potential drawbacks, and one owner finds the 12.4mm thickness and flat caseback make it wear tall. On balance, owners and reviewers rate the Longines FLAGSHIP CLASSIC highly for its exceptional value and classic aesthetic.

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