Side by side

Fears Brunswick 40 (Black)vsSeiko King Seiko KSK

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

Brunswick 40 (Black)
FearsBrunswick 40 (Black)
MSRP $3,545
King Seiko KSK
SeikoKing Seiko KSK
MSRP $2,000

At a glance

14 of 29 specs differ
Diameter
Brunswick 40 (Black)40mm
King Seiko KSK38.3mm
Power Reserve
Brunswick 40 (Black)40h
King Seiko KSK72h
Water Resistance
Brunswick 40 (Black)15m
King Seiko KSK100m
MSRP
Brunswick 40 (Black)$3,545
King Seiko KSK$2,000

Full specifications

Case

6 specs
Diameter
40mm
38.3mm
Thickness
11.9mm
11.7mm
Lug-to-Lug
46.5mm
46mm
Lug Width
20mm
19mm
Material
316L Stainless Steel
Stainless Steel
Water Resistance
15m
100m

Crystal & Dial

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

Movement

3 specs
Caliber
La Joux-Perret G100
6R55
Power Reserve
40h
72h
Jewels
25
24

Pricing

1 specs
MSRP
$3,545
$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.

Fears Brunswick 40 (Black)

The Fears Brunswick 40 (Black) is praised for its shirt-cuff-sleek 11.06mm thin case and a bespoke five-link bracelet with a butterfly clasp, noted for its wrist-hugging comfort and muscular appearance on the cushion case. Its brushed finish effectively hides hairlines. The ETA 2824-2 automatic movement powers the watch. On balance, owners and reviewers rate the Fears Brunswick 40 (Black) highly for its British, bespoke take on the classic sports watch design and comfortable wearability.

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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