Side by side

Rolex DatejustvsSeiko King Seiko KSK

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

What people say

Owners + reviewers, side by side

Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.

Rolex Datejust

The Rolex Datejust is widely praised for its versatility, robust elegance, and historical significance, serving as a foundational piece of the brand's legacy. Owners and reviewers frequently highlight its spectacular aesthetic variety, with numerous configurations available, and its comfortable wearability, particularly on the Jubilee bracelet. The 31mm case size is noted for its comfortable proportions, and the watch is considered durable for daily wear, suitable for both casual and formal occasions. Some owners appreciate the dynamic dial colors and the tactile experience of winding the automatic movement. However, some sources indicate that polished surfaces can scratch easily, and servicing is costly. The Rolex Datejust is generally not considered a good investment, with models typically depreciating upon purchase.

From video reviewers

The fluted bezel is a consistent highlight. Reviewers did not agree on any specific weaknesses.

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.

At a glance

20 of 29 specs differ
Diameter
Datejust31mm
King Seiko KSK36.1mm
Power Reserve
Datejust55h
King Seiko KSK72h
Water Resistance
Datejust100m
King Seiko KSK100m
MSRP
Datejust$7,700
King Seiko KSK$1,900

Full specifications

Case

7 specs
Diameter
31mm
36.1mm
Thickness
11.6mm
Lug-to-Lug
43mm
Lug Width
0mm
19mm
Material
Oystersteel
Stainless Steel
Finish
White Rolesor - combination of Oystersteel and white gold
Caseback
Monobloc middle case, screw-down case back and winding crown

Crystal & Dial

5 specs
Crystal Shape
Flat
Box
AR Coating
Anti-reflective coating on inner surface
Dial Color
Light Green
Indices
Index
Lume
Chromalight
LumiBrite on hands and index(es)

Movement

7 specs
Caliber
2236
6R51
Beat Rate
28,800 vph
0 vph
Power Reserve
55h
72h
Jewels
31
24
Hacking
Yes
No
Hand-winding
Yes
No
Complications
Date
None

Pricing

1 specs
MSRP
$7,700
$1,900
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