Side by side

Zelos Nasa Edition (sellita)vsHELM Komodo

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
HELMKomodo
MSRP $295

At a glance

17 of 29 specs differ
Diameter
Nasa Edition (sellita)39mm
Komodo40mm
Power Reserve
Nasa Edition (sellita)40h
Komodo40h
Water Resistance
Nasa Edition (sellita)50m
Komodo300m
MSRP
Nasa Edition (sellita)$629
Komodo$295

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
Stainless Steel
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
$295

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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

The HELM Komodo is widely praised for its excellent build quality, top-notch case finishing, clear double-domed sapphire crystal, wonderfully executed dial, and substantial lume, with reviewers noting its ISO 6425 compliance and 300m water resistance. Owners report a snappy 120-click bezel and appreciate the depth, detail, and finishing for a tool diver at its price point. Some owners find the 15.2mm to 15.5mm height makes the HELM Komodo feel thick and hefty, and the bezel ridges are noted as somewhat uncomfortable to turn, while the clasp design is also flagged as a drawback. On balance, owners and reviewers rate the HELM Komodo highly for its exceptional finishing and lume at its sub-$300 price point.

From video reviewers

The HELM Komodo's double domed sapphire crystal offers excellent optical clarity and minimal distortion. A notable weakness is its limited availability, making it harder to get than some other luxury watches. Reviewers disagree on the watch's lug-to-lug fit, with one reviewer noting it may not suit those with smaller wrists, while another reviewer does not mention this as a concern.

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