Side by side

Bremont Supermarine ChronovsSeiko King Seiko KSK

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

Supermarine Chrono
BremontSupermarine Chrono
MSRP $6,850
King Seiko KSK
SeikoKing Seiko KSK
MSRP $2,000

At a glance

14 of 29 specs differ
Diameter
Supermarine Chrono43mm
King Seiko KSK38.3mm
Power Reserve
Supermarine Chrono40h
King Seiko KSK72h
Water Resistance
Supermarine Chrono300m
King Seiko KSK100m
MSRP
Supermarine Chrono$6,850
King Seiko KSK$2,000

Full specifications

Case

7 specs
Category
Chronograph
Dress
Diameter
43mm
38.3mm
Thickness
15.87mm
11.7mm
Lug-to-Lug
46mm
Lug Width
22mm
19mm
Material
Stainless Steel (DLC coated)
Stainless Steel
Water Resistance
300m
100m

Crystal & Dial

3 specs
Crystal Shape
Flat
Box
AR Coating
Inner
Anti-reflective coating on inner surface
Lume
None
LumiBrite on Hands

Movement

3 specs
Caliber
BE-50AE
6R55
Power Reserve
40h
72h
Jewels
25
24

Pricing

1 specs
MSRP
$6,850
$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.

Bremont Supermarine Chrono

The Bremont Supermarine Chrono's black dial and understated bezel markings allow it to transition effectively from rugged use to evening events. On balance, owners and reviewers find the Bremont Supermarine Chrono to be a handsome and functional watch, with its versatile dial design being a key strength.

Seiko King Seiko KSK

Owners and reviewers widely praise the King Seiko KSK's sharp, faceted case design and harmonious mid-century aesthetic. Its compact 38.1mm or 37mm size and slim 10.7mm thickness are noted as highly wearable. However, accuracy is a point of contention, with one reviewer reporting a wide range of +25 to -15 seconds per day for the 6R31 movement, while others criticize the standard 6R movement as too thick and a departure from the brand's history. Water resistance is consistently cited as limited to 50 meters, and one owner reported misaligned screws on the caseback and clasp. On balance, owners and reviewers find the King Seiko KSK appealing for its design and wearability, though the movement choice and accuracy are significant drawbacks for some.

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