Side by side

Formex Essence ThirtyNinevsSeiko King Seiko KSK

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

Essence ThirtyNine
FormexEssence ThirtyNine
MSRP $2,390
King Seiko KSK
SeikoKing Seiko KSK
MSRP $3,300

At a glance

13 of 29 specs differ
Diameter
Essence ThirtyNine39mm
King Seiko KSK38.6mm
Power Reserve
Essence ThirtyNine41h
King Seiko KSK45h
Water Resistance
Essence ThirtyNine100m
King Seiko KSK50m
MSRP
Essence ThirtyNine$2,390
King Seiko KSK$3,300

Full specifications

Case

5 specs
Diameter
39mm
38.6mm
Thickness
10mm
10.7mm
Lug-to-Lug
45mm
45.8mm
Lug Width
20mm
19mm
Water Resistance
100m
50m

Crystal & Dial

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

Movement

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

Pricing

1 specs
MSRP
$2,390
$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 ThirtyNine

The Formex Essence ThirtyNine is praised for its impressive build quality and value, featuring a patented case suspension system for comfort and protection. It houses a COSC-certified Sellita SW200-1 movement with a 38-hour power reserve and a tool-free strap quick-release system. A minor inconvenience noted is the specific closing order of the clasp. On balance, reviewers rate the Formex Essence ThirtyNine highly for its comfortable wearability and excellent value 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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