Side by side

Seiko King Seiko KSKvsLongines HYDROCONQUEST

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

King Seiko KSK
SeikoKing Seiko KSK
MSRP $3,300
HYDROCONQUEST
LonginesHYDROCONQUEST
MSRP $2,000

At a glance

20 of 29 specs differ
Diameter
King Seiko KSK38.6mm
HYDROCONQUEST41mm
Power Reserve
King Seiko KSK45h
HYDROCONQUEST72h
Water Resistance
King Seiko KSK50m
HYDROCONQUEST300m
MSRP
King Seiko KSK$3,300
HYDROCONQUEST$2,000

Full specifications

Case

9 specs
Category
Dress
Diver
Diameter
38.6mm
41mm
Thickness
10.7mm
11.9mm
Lug-to-Lug
45.8mm
53.5mm
Lug Width
19mm
21mm
Material
Stainless Steel
Ceramic
Finish
Brushed and polished
Water Resistance
50m
300m
Caseback
Solid

Crystal & Dial

4 specs
Crystal Shape
Box
AR Coating
Anti-reflective coating on inner surface
Dial Color
Black
Green
Indices
Applied

Movement

6 specs
Caliber
6L35
L888.5
Beat Rate
28,800 vph
0 vph
Power Reserve
45h
72h
Jewels
26
0
Hacking
Yes
No
Hand-winding
Yes
No

Pricing

1 specs
MSRP
$3,300
$2,000

Follow this matchup

Get a note when Seiko King Seiko KSK vs Longines HYDROCONQUEST gets more votes, a community discussion, or a price drop. No account needed.

What people say

Owners + reviewers, side by side

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

Seiko King Seiko KSK

Owners and reviewers widely praise the King Seiko KSK for its exceptional dial and case finishing, often compared to higher-end brands, and its slim, retro design. The use of the Calibre 6L35 movement in some variants is seen as a significant upgrade, contributing to a refined feel, while others note the bracelet is unusually nice and the case offers a mix of brushed and polished finishes with sharp angles. However, some owners question the value proposition, citing misaligned screws and clasp components on their examples, and the standard 6R movement in some models is criticized as a disappointment for the price point. Accuracy figures range from +15/-10 seconds per day to +5 to +7 seconds per day, and water resistance is rated at 5 BAR or 50 meters. Overall, owners and reviewers find the King Seiko KSK to be a beautiful and classy watch with fantastic finishing, though some are divided on its value and movement choice at its price point.

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.

Keep exploring

More watches worth a look

Matched to the watches above on size, movement, style and price — microbrands first. Open any one to dig in.

Adjacent matchups

People also compared

Comparisons nearby in the catalog — alternatives to the watches above paired against the matchup.