Side by side

Tudor Black Bay 58 18KvsLongines HYDROCONQUEST

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

Black Bay 58 18K
TudorBlack Bay 58 18K
MSRP $22,550
HYDROCONQUEST
LonginesHYDROCONQUEST
MSRP $2,000

At a glance

11 of 29 specs differ
Diameter
Black Bay 58 18K39mm
HYDROCONQUEST41mm
Power Reserve
Black Bay 58 18K70h
HYDROCONQUEST72h
Water Resistance
Black Bay 58 18K200m
HYDROCONQUEST300m
MSRP
Black Bay 58 18K$22,550
HYDROCONQUEST$2,000

Full specifications

Case

8 specs
Diameter
39mm
41mm
Thickness
12.7mm
11.9mm
Lug-to-Lug
46mm
53.5mm
Lug Width
20mm
21mm
Material
18k Yellow Gold
Ceramic
Finish
Satin
Water Resistance
200m
300m
Caseback
Solid screw-down

Movement

2 specs
Caliber
MT5400
L888.5
Power Reserve
70h
72h

Pricing

1 specs
MSRP
$22,550
$2,000

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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 58 18K

Owners appreciate the substantial feel of the 18K gold Tudor Black Bay 58 on the wrist, with reviewers noting the brushed gold finishing and 39mm case size. The watch is powered by the COSC-certified Manufacture Caliber MT5400 with a 70-hour power reserve, visible through an open caseback. Sources offer differing price points, ranging from $16,800 to $32,100 depending on the strap or bracelet. Some reviewers criticize the brushed finish for diminishing the visual luxury of gold and find the green dial and bezel color combination divisive or lacking charisma. Overall, owners and reviewers find the Tudor Black Bay 58 18K to be an ambitious, albeit divisive, precious metal sports watch, with praise for its substantial feel and brushed gold finishing.

Longines HYDROCONQUEST

Owners widely praise the Longines Hydroconquest for its attractive sunburst blue dial and accurate timekeeping, with one owner reporting a loss of only 2 seconds per day. However, the bracelet is frequently criticized for lacking micro-adjustments and having pinch-prone links, and the screw-down crown is noted as inconvenient and difficult to operate by multiple owners. Some owners also flag the bezel action as ratchety with back play, and one owner found the lugs sharp and the overall design uncomfortable, leading them to sell the watch. On balance, owners appreciate the Longines Hydroconquest's aesthetic appeal and value, despite significant reservations about its bracelet and crown usability.

From video reviewers

The bezel action is praised for its smooth and precise rotation. Lume brightness is a shared weakness, found to be somewhat lacking. Reviewers disagreed on the watch's value proposition compared to alternatives.

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