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.

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's sharp, faceted case design and harmonious mid-century aesthetic. Its compact 38.1mm or 37mm size and slim 10.7mm thickness are noted as highly wearable. However, accuracy is a point of contention, with one reviewer reporting a wide range of +25 to -15 seconds per day for the 6R31 movement, while others criticize the standard 6R movement as too thick and a departure from the brand's history. Water resistance is consistently cited as limited to 50 meters, and one owner reported misaligned screws on the caseback and clasp. On balance, owners and reviewers find the King Seiko KSK appealing for its design and wearability, though the movement choice and accuracy are significant drawbacks for some.

At a glance

12 of 29 specs differ
Diameter
Essence FortyOne41mm
King Seiko KSK38.3mm
Power Reserve
Essence FortyOne41h
King Seiko KSK72h
Water Resistance
Essence FortyOne100m
King Seiko KSK100m
MSRP
Essence FortyOne$1,890
King Seiko KSK$2,000

Full specifications

Case

4 specs
Diameter
41mm
38.3mm
Thickness
10.6mm
11.7mm
Lug-to-Lug
46.5mm
46mm
Lug Width
22mm
19mm

Crystal & Dial

4 specs
Crystal Shape
Box
AR Coating
Anti-reflective coating on inner surface
Dial Color
Arctic White
Lume
Super-LumiNova
LumiBrite on Hands

Movement

3 specs
Caliber
Sellita SW200-1
6R55
Power Reserve
41h
72h
Jewels
0
24

Pricing

1 specs
MSRP
$1,890
$2,000
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