Side by side

Formex Essence ThirtyNinevsGrand Seiko SBGA427

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 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.

From video reviewers

The case suspension system enhances comfort and the COSC-certified movement is a strong feature. The bracelet exhibits noticeable rattle. Reviewers disagreed on the ideal case size, with some preferring the 39mm and others the 41mm.

Grand Seiko SBGA427

Grand Seiko SBGA427 owners widely praise its extensive Zaratsu polishing and the "hall of mirrors" effect created by its diamond-cut indexes, complemented by a subtle, reeded dial and a striking green seconds hand. The 39mm case is noted for its comfortable, tapered bracelet, and the 9R65 Spring Drive movement is visible through the caseback. Some owners report the highly polished Zaratsu finish is prone to scuffs and scratches, with one mentioning a scratch near 1 o'clock. The Grand Seiko SBGA427 sold for $3750. Overall, owners rate the Grand Seiko SBGA427 highly for its exceptional finishing and the unique visual appeal of its dial and indexes.

At a glance

10 of 29 specs differ
Diameter
Essence ThirtyNine39mm
SBGA42739mm
Power Reserve
Essence ThirtyNine41h
SBGA42772h
Water Resistance
Essence ThirtyNine100m
SBGA427100m
MSRP
Essence ThirtyNine$2,390
SBGA427$5,800

Full specifications

Case

3 specs
Thickness
10mm
12.3mm
Lug-to-Lug
45mm
46.8mm
Lug Width
20mm
19mm

Crystal & Dial

3 specs
AR Coating
Yes
Dial Color
Space Ghost
Lume
Super-LumiNova
None

Movement

3 specs
Caliber
Sellita SW200-1
9R65
Type
Automatic
Spring Drive
Power Reserve
41h
72h

Pricing

1 specs
MSRP
$2,390
$5,800
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