Side by side

Formex Essence ThirtyNinevsSternglas Naos

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.

Sternglas Naos

The Sternglas Naos is widely praised for its refined daily wearability and Bauhaus design, with owners noting its durable construction, scratchless sapphire crystal, and flawless date mechanism. Reviewers highlight the comfortable and supple bracelet that drapes well and a date window that matches the dial. One owner advises replacing the original tan strap due to a lack of durability. The quartz movement is noted for its accuracy, and the absence of a seconds hand is seen as a unique solution to prevent misaligned markers. Overall, owners and reviewers rate the Sternglas Naos highly for its harmonious design and comfortable wear at its price point.

At a glance

11 of 29 specs differ
Diameter
Essence ThirtyNine39mm
Naos38mm
Power Reserve
Essence ThirtyNine41h
Naos
Water Resistance
Essence ThirtyNine100m
Naos50m
MSRP
Essence ThirtyNine$2,390
Naos$323

Full specifications

Case

4 specs
Diameter
39mm
38mm
Thickness
10mm
7.2mm
Lug-to-Lug
45mm
41mm
Water Resistance
100m
50m

Crystal & Dial

2 specs
Dial Color
Space Ghost
Lume
Super-LumiNova
None

Movement

4 specs
Caliber
Sellita SW200-1
Ronda 714
Type
Automatic
Quartz
Power Reserve
41h
Jewels
0

Pricing

1 specs
MSRP
$2,390
$323
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