Side by side

Fears Brunswick 40.5 Jump HourvsSeiko King Seiko KSK

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

Brunswick 40.5 Jump Hour
FearsBrunswick 40.5 Jump Hour
MSRP $4,498
King Seiko KSK
SeikoKing Seiko KSK
MSRP $2,000

At a glance

15 of 29 specs differ
Diameter
Brunswick 40.5 Jump Hour40.5mm
King Seiko KSK38.3mm
Power Reserve
Brunswick 40.5 Jump Hour40h
King Seiko KSK72h
Water Resistance
Brunswick 40.5 Jump Hour10m
King Seiko KSK100m
MSRP
Brunswick 40.5 Jump Hour$4,498
King Seiko KSK$2,000

Full specifications

Case

6 specs
Diameter
40.5mm
38.3mm
Thickness
12.8mm
11.7mm
Lug-to-Lug
47mm
46mm
Lug Width
20mm
19mm
Material
316L Stainless Steel
Stainless Steel
Water Resistance
10m
100m

Crystal & Dial

5 specs
Crystal
Domed Sapphire
Sapphire
Crystal Shape
Flat
Box
AR Coating
Inner
Anti-reflective coating on inner surface
Dial Color
Blue
Black
Lume
None
LumiBrite on Hands

Movement

3 specs
Caliber
Sellita SW200
6R55
Power Reserve
40h
72h
Jewels
25
24

Pricing

1 specs
MSRP
$4,498
$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 40.5 Jump Hour

Owners widely praise the Fears Brunswick 40.5 Jump Hour's stunning aventurine dial and vintage-modern aesthetic, with some noting excellent finishing. Reviewers highlight its fun dial visuals and unique in-house jump hour module. Owners are split on legibility with the jump hour complication, and some find the 12.8mm thickness substantial for some wrists. On balance, owners and reviewers rate the Fears Brunswick 40.5 Jump Hour highly for its unique dial and jump hour complication, despite some concerns about thickness and legibility.

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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