Side by side

Zelos Nasa Edition (sellita)vsMassena LAB Uni-Racer

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

Nasa Edition (sellita)
ZelosNasa Edition (sellita)
MSRP $629
Uni-Racer
Massena LABUni-Racer
MSRP $3,495

At a glance

12 of 29 specs differ
Diameter
Nasa Edition (sellita)39mm
Uni-Racer39mm
Power Reserve
Nasa Edition (sellita)40h
Uni-Racer58h
Water Resistance
Nasa Edition (sellita)50m
Uni-Racer50m
MSRP
Nasa Edition (sellita)$629
Uni-Racer$3,495

Full specifications

Case

4 specs
Category
Dress
Chronograph
Thickness
7.6mm
9mm
Lug-to-Lug
39mm
46mm
Material
316L Stainless Steel
Stainless Steel

Crystal & Dial

4 specs
Crystal
Domed Sapphire
Acrylic
Crystal Shape
Flat
Domed
AR Coating
Inner
No
Dial Color
NASA Edition (Sellita)
White

Movement

3 specs
Caliber
ETA/Peseux 7001
SW510 BH M Elaboré
Power Reserve
40h
58h
Jewels
25
23

Pricing

1 specs
MSRP
$629
$3,495

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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.

Massena LAB Uni-Racer

The Massena LAB Uni-Racer is praised for its refined vintage chronograph aesthetic, featuring a 39mm case with unique horizontal finishing, a GPHG-nominated hand-wound Sellita SW510 M movement, and a sector dial with a "big eye" counter. Owners and reviewers highlight its period-perfect Super-LumiNova and snailing on recessed registers, all supported by a 58-hour power reserve and 50m water resistance. On balance, owners and reviewers rate the Massena LAB Uni-Racer highly for its authentic vintage design and refined execution at its price point.

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