Side by side

Tudor Black Bay One 31 S&GvsLongines HYDROCONQUEST GMT

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
HYDROCONQUEST GMT
LonginesHYDROCONQUEST GMT
MSRP $3,350

At a glance

12 of 29 specs differ
Diameter
Black Bay One 31 S&G31mm
HYDROCONQUEST GMT41mm
Power Reserve
Black Bay One 31 S&G50h
HYDROCONQUEST GMT40h
Water Resistance
Black Bay One 31 S&G100m
HYDROCONQUEST GMT300m
MSRP
Black Bay One 31 S&G$6,850
HYDROCONQUEST GMT$3,350

Full specifications

Case

8 specs
Category
Diver
Diameter
31mm
41mm
Thickness
9.5mm
12.9mm
Lug-to-Lug
46mm
49.4mm
Lug Width
17mm
21mm
Finish
Polished + Satin
Brushed and polished
Water Resistance
100m
300m
Caseback
Solid screw-down
Solid

Crystal & Dial

1 specs
Dial Color
Black
Green

Movement

2 specs
Caliber
MT5201
L844.5
Power Reserve
50h
40h

Pricing

1 specs
MSRP
$6,850
$3,350

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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 HYDROCONQUEST GMT

Owners widely praise the Longines HYDROCONQUEST GMT for its excellent finishing, smooth winding action, and overall value, with some finding its build quality and colorways superior to higher-priced competitors. Reviewers and owners alike note its robustness as a traveler's dive watch with a true GMT movement. Some owners find the round markers at 6 and 9 disrupt dial symmetry, and the GMT hour markers are described as tiny and difficult to read. The date wheel can be mismatched on certain dial colors, and the bracelet clasp is noted as sharp by one reviewer. While some owners wish for a smaller case size, others find the 41mm comfortable. The bezel action is flagged as having bounce-back by one owner, though the brushed finish effectively hides wear. Overall, owners and reviewers rate the Longines HYDROCONQUEST GMT highly for its robust build and excellent value proposition.

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