Side by side

Massena LAB Uni-RacervsZelos Comet 39

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

Uni-Racer
Massena LABUni-Racer
MSRP $3,495
Comet 39
ZelosComet 39
MSRP $2,499

At a glance

12 of 29 specs differ
Diameter
Uni-Racer39mm
Comet 3939mm
Power Reserve
Uni-Racer58h
Comet 3940h
Water Resistance
Uni-Racer50m
Comet 3950m
MSRP
Uni-Racer$3,495
Comet 39$2,499

Full specifications

Case

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

Crystal & Dial

4 specs
Crystal
Acrylic
Domed Sapphire
Crystal Shape
Domed
Flat
AR Coating
No
Inner
Dial Color
White
Tantalum LE

Movement

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

Pricing

1 specs
MSRP
$3,495
$2,499

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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.

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.

Zelos Comet 39

Owners widely praise the Zelos Comet 39 for its wearable 39mm size, thin profile under 10mm thanks to its manual-wind Sellita SW215 movement, and its captivating dial with a deep starburst effect. The winding action is described as a joy, and the watch is considered a stunner for its price, blending modern and vintage aesthetics. Some owners note frustration with Zelos's limited production runs leading to quick sell-outs. One owner found the logo childlike, while another experienced strap-rubbing issues with the short lugs, which were resolved with a Milanese bracelet. Overall, owners and reviewers rate the Zelos Comet 39 highly for its excellent value and striking dial design.

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