Side by side

Zelos Nasa Edition (sellita)vsHELM Komodo Titanium

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

Nasa Edition (sellita)
ZelosNasa Edition (sellita)
MSRP $629
Komodo Titanium
HELMKomodo Titanium
MSRP $350

At a glance

17 of 29 specs differ
Diameter
Nasa Edition (sellita)39mm
Komodo Titanium40mm
Power Reserve
Nasa Edition (sellita)40h
Komodo Titanium40h
Water Resistance
Nasa Edition (sellita)50m
Komodo Titanium300m
MSRP
Nasa Edition (sellita)$629
Komodo Titanium$350

Full specifications

Case

6 specs
Category
Dress
Diver
Diameter
39mm
40mm
Thickness
7.6mm
15.5mm
Lug-to-Lug
39mm
47mm
Material
316L Stainless Steel
Titanium
Water Resistance
50m
300m

Crystal & Dial

5 specs
Crystal
Domed Sapphire
Sapphire
Crystal Shape
Flat
Double-Domed
AR Coating
Inner
Yes
Dial Color
NASA Edition (Sellita)
Black
Lume
None
Super-LumiNova

Movement

5 specs
Caliber
ETA/Peseux 7001
Seiko Instruments NH35
Type
Manual
Automatic
Power Reserve
40h
40h
Jewels
25
24
Complications
None
Date

Pricing

1 specs
MSRP
$629
$350

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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.

Zelos Nasa Edition (sellita)

The Zelos Nasa Edition (sellita) is praised for its thinness, stemming from its hand-wound Sellita SW215 movement, and is noted for its good size and wearability. The watch features a 39mm case, a 45mm lug to lug, and a 20mm lug width. On balance, owners rate the Zelos Nasa Edition (sellita) highly for its comfortable dimensions and thin profile.

HELM Komodo Titanium

Owners widely praise the HELM Komodo Titanium for its excellent build quality, top-notch case finishing, dial execution, and abundant BWG9 lume, noting its robust tool watch ethos and exceptional value under $300. The watch features a clean, unique design with a matte white dial, color-matched indices and hands, and a precise 120-click bezel. However, its thickness, cited between 15.2mm and 15.5mm, leads some owners to describe it as chunky or hefty, and the large clasp design is noted as a drawback by one owner. The bezel ridges are also flagged as making it somewhat uncomfortable to turn. On balance, owners rate the HELM Komodo Titanium highly for its exceptional value and robust tool watch build.

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