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 $1,900

At a glance

15 of 29 specs differ
Diameter
Brunswick 40.5 Jump Hour40.5mm
King Seiko KSK36.1mm
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$1,900

Full specifications

Case

6 specs
Diameter
40.5mm
36.1mm
Thickness
12.8mm
11.6mm
Lug-to-Lug
47mm
43mm
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 and index(es)

Movement

3 specs
Caliber
Sellita SW200
6R51
Power Reserve
40h
72h
Jewels
25
24

Pricing

1 specs
MSRP
$4,498
$1,900

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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

The King Seiko KSK is widely praised for its refined finishing, with owners and reviewers noting its sharp case, faceted lugs, and well-executed dial indices, often comparing its polishing favorably to Grand Seiko. Enthusiasts appreciate its slim, retro design, with some stating it wears smaller than its official size due to the cushion case and close-to-the-wrist feel. The use of the slimline Calibre 6L35 movement is seen as an upgrade, maintaining the watch's slender profile, though some owners express concern over the price point and the perceived value of the movement. Accuracy figures vary, with one owner reporting +5 to +7 seconds per day, while another notes +15/-10 seconds per day. Some owners have noted minor quality control issues such as misaligned screws or a burr on a hand. On balance, owners and reviewers rate the King Seiko KSK highly for its exceptional case and dial finishing at its price point.

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