Side by side

Seiko King Seiko KSKvsLongines MASTER COLLECTION MOONPHASE

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

King Seiko KSK
SeikoKing Seiko KSK
MSRP $3,300
MASTER COLLECTION MOONPHASE
LonginesMASTER COLLECTION MOONPHASE
MSRP $3,000

At a glance

21 of 29 specs differ
Diameter
King Seiko KSK38.6mm
MASTER COLLECTION MOONPHASE34mm
Power Reserve
King Seiko KSK45h
MASTER COLLECTION MOONPHASE72h
Water Resistance
King Seiko KSK50m
MASTER COLLECTION MOONPHASE30m
MSRP
King Seiko KSK$3,300
MASTER COLLECTION MOONPHASE$3,000

Full specifications

Case

8 specs
Category
Dress
Moonphase
Diameter
38.6mm
34mm
Thickness
10.7mm
11.1mm
Lug-to-Lug
45.8mm
41.7mm
Lug Width
19mm
18mm
Finish
Brushed and polished
Water Resistance
50m
30m
Caseback
Solid
Transparent case back with sapphire crystal

Crystal & Dial

5 specs
Crystal Shape
Box
AR Coating
Anti-reflective coating on inner surface
Both sides
Dial Color
Black
Silver
Indices
Applied
Painted Arabic numerals
Lume
None
Super-LumiNova

Movement

7 specs
Caliber
6L35
L899.5
Beat Rate
28,800 vph
25,200 vph
Power Reserve
45h
72h
Jewels
26
0
Hacking
Yes
No
Hand-winding
Yes
No
Complications
None
Hours, minutes, seconds, moon phase display and date indicated by small hand at

Pricing

1 specs
MSRP
$3,300
$3,000

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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.

Seiko King Seiko KSK

Owners and reviewers widely praise the King Seiko KSK for its exceptional dial and case finishing, often compared to higher-end brands, and its slim, retro design. The use of the Calibre 6L35 movement in some variants is seen as a significant upgrade, contributing to a refined feel, while others note the bracelet is unusually nice and the case offers a mix of brushed and polished finishes with sharp angles. However, some owners question the value proposition, citing misaligned screws and clasp components on their examples, and the standard 6R movement in some models is criticized as a disappointment for the price point. Accuracy figures range from +15/-10 seconds per day to +5 to +7 seconds per day, and water resistance is rated at 5 BAR or 50 meters. Overall, owners and reviewers find the King Seiko KSK to be a beautiful and classy watch with fantastic finishing, though some are divided on its value and movement choice at its price point.

Longines MASTER COLLECTION MOONPHASE

Owners widely praise the Longines MASTER COLLECTION MOONPHASE for its mesmerizing and legible dial, balancing classic and complex design elements, with many considering it a great value for its complications. Reviewers note the 40mm case feels well-balanced, and the Caliber L899 movement offers a 64-hour power reserve. Some owners suggest the price point may be high relative to alternatives, and the 3 bar water resistance means it is not suitable for swimming, while the complete calendar requires manual adjustment for shorter months. On balance, the consensus is that owners rate the Longines MASTER COLLECTION MOONPHASE highly for its attractive dial and complications at its price point.

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