Side by side

Massena LAB Uni-RacervsZelos Hammerhead V3 300m Bronze

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

Uni-Racer
Massena LABUni-Racer
MSRP $3,495
Hammerhead V3 300m Bronze
ZelosHammerhead V3 300m Bronze
MSRP $449

At a glance

16 of 29 specs differ
Diameter
Uni-Racer39mm
Hammerhead V3 300m Bronze44mm
Power Reserve
Uni-Racer58h
Hammerhead V3 300m Bronze40h
Water Resistance
Uni-Racer50m
Hammerhead V3 300m Bronze300m
MSRP
Uni-Racer$3,495
Hammerhead V3 300m Bronze$449

Full specifications

Case

7 specs
Category
Chronograph
Diver
Diameter
39mm
44mm
Thickness
9mm
13mm
Lug-to-Lug
46mm
44mm
Lug Width
20mm
22mm
Material
Stainless Steel
Titanium
Water Resistance
50m
300m

Crystal & Dial

4 specs
Crystal
Acrylic
Domed Sapphire
Crystal Shape
Domed
Flat
AR Coating
No
Inner
Dial Color
White
Bronze - Frost

Movement

4 specs
Caliber
SW510 BH M Elaboré
Seiko NH35
Type
Manual
Automatic
Power Reserve
58h
40h
Jewels
23
25

Pricing

1 specs
MSRP
$3,495
$449

Follow this matchup

Get a note when Massena LAB Uni-Racer vs Zelos Hammerhead V3 300m Bronze gets more votes, a community discussion, or a price drop. No account needed.

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 Hammerhead V3 300m Bronze

Owners widely praise the Zelos Hammerhead V3 300m Bronze for its distinctive 70s-inspired design, slim 13.5mm case, and improved lume, offering a sophisticated timepiece at an accessible price point starting at $349. The unique dial is noted for evoking an otherworldly feeling, and the comfortable bracelet features on-the-fly micro-adjustment. Some enthusiasts express frustration with shipping delays and a desire to see the watch on a wrist before purchase. One owner flags that the clasp material could be more scratch-resistant, and resizing bracelet pins can be stubborn. On balance, owners rate the Zelos Hammerhead V3 300m Bronze highly for its unique design and build quality at its price point.

Keep exploring

More watches worth a look

Matched to the watches above on size, movement, style and price — microbrands first. Open any one to dig in.

Adjacent matchups

People also compared

Comparisons nearby in the catalog — alternatives to the watches above paired against the matchup.