Side by side

Seiko King Seiko KSKvsSpinnaker Tesei Bronze Swiss

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

King Seiko KSK
SeikoKing Seiko KSK
MSRP $1,900
Tesei Bronze Swiss
SpinnakerTesei Bronze Swiss
MSRP $850

At a glance

15 of 29 specs differ
Diameter
King Seiko KSK36.1mm
Tesei Bronze Swiss43mm
Power Reserve
King Seiko KSK72h
Tesei Bronze Swiss40h
Water Resistance
King Seiko KSK100m
Tesei Bronze Swiss300m
MSRP
King Seiko KSK$1,900
Tesei Bronze Swiss$850

Full specifications

Case

7 specs
Category
Dress
Diver
Diameter
36.1mm
43mm
Thickness
11.6mm
16mm
Lug-to-Lug
43mm
52mm
Lug Width
19mm
22mm
Material
Stainless Steel
Bronze
Water Resistance
100m
300m

Crystal & Dial

4 specs
Crystal Shape
Box
Flat
AR Coating
Anti-reflective coating on inner surface
Inner
Dial Color
Black
Green
Lume
LumiBrite on hands and index(es)
None

Movement

3 specs
Caliber
6R51
Sellita SW200-1
Power Reserve
72h
40h
Jewels
24
25

Pricing

1 specs
MSRP
$1,900
$850

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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.

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.

Spinnaker Tesei Bronze Swiss

Owners praise the Spinnaker Tesei Bronze Swiss for its incredible macro-level detail and sharp design, noting its bronze case, ceramic bezel, and wave dial. The inclusion of a Sellita SW200 Swiss movement is highlighted. One owner expressed a desire for a smaller 39-40mm variant, stating it would be their ultimate bronze diver if such a size were offered. On balance, owners rate the Spinnaker Tesei Bronze Swiss highly for its detailed finishing and bronze diver aesthetic.

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