Side by side

Zelos Nasa Edition (sellita)vsCWC 6BB-WR

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

Nasa Edition (sellita)
ZelosNasa Edition (sellita)
MSRP $629
6BB-WR
CWC6BB-WR
MSRP $1,875

At a glance

11 of 29 specs differ
Diameter
Nasa Edition (sellita)39mm
6BB-WR42mm
Power Reserve
Nasa Edition (sellita)40h
6BB-WR40h
Water Resistance
Nasa Edition (sellita)50m
6BB-WR100m
MSRP
Nasa Edition (sellita)$629
6BB-WR$1,875

Full specifications

Case

6 specs
Category
Dress
Chronograph
Diameter
39mm
42mm
Thickness
7.6mm
14.9mm
Lug-to-Lug
39mm
49mm
Material
316L Stainless Steel
Stainless Steel
Water Resistance
50m
100m

Crystal & Dial

2 specs
Crystal
Domed Sapphire
Sapphire
Dial Color
NASA Edition (Sellita)
CWC 6BB-WR

Movement

2 specs
Caliber
ETA/Peseux 7001
Sellita SW510
Type
Manual
Automatic

Pricing

1 specs
MSRP
$629
$1,875

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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.

CWC 6BB-WR

The CWC 6BB-WR is widely praised for its legible matte black dial, strong lume, and crisp chronograph operation. Owners and reviewers note its military heritage and rugged, confidence-inspiring build with a screw-down crown and pushers. The Sellita SW510 BH b automatic movement kept time within COSC range in testing. However, its 14.9mm thickness and 80g weight make it wear large, and the cam-lever movement lacks the satisfying click of a column wheel. Fixed bars limit strap options. On balance, owners and reviewers rate the CWC 6BB-WR highly for its legible dial and robust pilot chronograph design at its price point.

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