Side by side

Tissot Gentleman Open HeartvsMassena LAB Uni-Racer

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

Gentleman Open Heart
TissotGentleman Open Heart
MSRP $1,025
Uni-Racer
Massena LABUni-Racer
MSRP $3,495

At a glance

15 of 29 specs differ
Diameter
Gentleman Open Heart40mm
Uni-Racer39mm
Power Reserve
Gentleman Open Heart80h
Uni-Racer58h
Water Resistance
Gentleman Open Heart100m
Uni-Racer50m
MSRP
Gentleman Open Heart$1,025
Uni-Racer$3,495

Full specifications

Case

5 specs
Diameter
40mm
39mm
Thickness
11.5mm
9mm
Lug-to-Lug
40mm
46mm
Lug Width
21mm
20mm
Water Resistance
100m
50m

Crystal & Dial

5 specs
Crystal
Sapphire
Acrylic
AR Coating
Yes
No
Dial Color
Silver
White
Indices
Indexes
Applied
Lume
Super-LumiNova ®
None

Movement

4 specs
Caliber
SW510 BH M Elaboré
Type
Automatic
Manual
Power Reserve
80h
58h
Jewels
25
23

Pricing

1 specs
MSRP
$1,025
$3,495

Follow this matchup

Get a note when Tissot Gentleman Open Heart vs Massena LAB Uni-Racer 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.

Tissot Gentleman Open Heart

Owners widely praise the Tissot Gentleman Open Heart for its versatile dressy-sporty aesthetic and elegant sunburst dial finish, with one owner preferring its less shiny blue dial compared to other versions. The watch offers excellent fit and bracelet adjustability, and its modified Powermatic 80 movement achieves COSC-level accuracy of -3 to +5 seconds/day, though the seconds hand movement is slightly less smooth at 6 movements per second. However, one owner reported the watch arrived non-functional, requiring a return due to an inoperable movement. On balance, owners rate the Tissot Gentleman Open Heart highly for its aesthetic appeal and accurate timekeeping, despite a reported instance of a faulty movement.

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.

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.