Side by side

Tudor Black Bay One 31vsLongines HYDROCONQUEST

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

Black Bay One 31
TudorBlack Bay One 31
MSRP $4,600
HYDROCONQUEST
LonginesHYDROCONQUEST
MSRP $2,350

At a glance

11 of 29 specs differ
Diameter
Black Bay One 3131mm
HYDROCONQUEST39mm
Power Reserve
Black Bay One 3150h
HYDROCONQUEST40h
Water Resistance
Black Bay One 31100m
HYDROCONQUEST300m
MSRP
Black Bay One 31$4,600
HYDROCONQUEST$2,350

Full specifications

Case

7 specs
Diameter
31mm
39mm
Thickness
9.5mm
12.2mm
Lug-to-Lug
46mm
48.1mm
Lug Width
17mm
19mm
Finish
Polished + Satin
Brushed and polished
Water Resistance
100m
300m
Caseback
Solid screw-down
Solid

Crystal & Dial

1 specs
Dial Color
Anthracite
Grey

Movement

2 specs
Caliber
MT5201
L888.5
Power Reserve
50h
40h

Pricing

1 specs
MSRP
$4,600
$2,350

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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

Owners widely report the Tudor Black Bay One 31's polished case and bracelet scratch easily, though its wearability under gloves and robust movement are praised. Some desire more micro-adjustment options on the clasp, and a lack of contrast between the silver dial and hands is noted. The 31mm size may be a consideration for daily wear due to its 50-hour power reserve. On balance, owners and reviewers appreciate the Tudor Black Bay One 31 for its comfortable wearability and robust movement, despite concerns about case scratching and clasp adjustability.

Longines HYDROCONQUEST

Owners widely praise the Longines HydroConquest's dial and finishing, with one owner finding it superior to a Rolex Submariner. The movement is noted as well-regulated, losing about 2 seconds per day. The watch is considered a versatile everyday or business-casual option, offering good value. However, owners criticize the bracelet for lacking tool-less micro-adjustment and describe winding the crown as a nuisance. Some in the line report tiny GMT markers that are difficult to read and the absence of a quick date adjust feature. Overall, owners rate the Longines HydroConquest highly for its finishing and value.

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