Side by side

Formex Essence FortyOnevsSeiko King Seiko KSK

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

Essence FortyOne
FormexEssence FortyOne
MSRP $1,890
King Seiko KSK
SeikoKing Seiko KSK
MSRP $3,300

At a glance

13 of 29 specs differ
Diameter
Essence FortyOne41mm
King Seiko KSK38.6mm
Power Reserve
Essence FortyOne41h
King Seiko KSK45h
Water Resistance
Essence FortyOne100m
King Seiko KSK50m
MSRP
Essence FortyOne$1,890
King Seiko KSK$3,300

Full specifications

Case

5 specs
Diameter
41mm
38.6mm
Thickness
10.6mm
10.7mm
Lug-to-Lug
46.5mm
45.8mm
Lug Width
22mm
19mm
Water Resistance
100m
50m

Crystal & Dial

4 specs
Crystal Shape
Flat
Box
AR Coating
Inner
Anti-reflective coating on inner surface
Dial Color
Arctic White
Black
Lume
Super-LumiNova
None

Movement

3 specs
Caliber
Sellita SW200-1
6L35
Power Reserve
41h
45h
Jewels
25
26

Pricing

1 specs
MSRP
$1,890
$3,300

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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.

Formex Essence FortyOne

Owners widely praise the Formex Essence for its comfortable bracelet, excellent finishing, and slim wearability, with some considering it the best in its price range. Reviewers highlight its compelling value, sporty-chic aesthetic, and build quality that suggests a more expensive product, noting the patented suspension system and chronometer-certified movement. Some owners dislike the brand name and logo, and the dial design is considered derivative by some. The 43mm case wears well due to its 10mm thickness and 49mm lug-to-lug, though some find it large on smaller wrists. A point of contention for some is the non-screw-down crown, despite its 100m water resistance. Overall, owners and reviewers rate the Formex Essence highly for its exceptional comfort and build quality at its price point.

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.

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