Side by side

MKII Project 300vsTissot Gentleman Open Heart

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

Project 300
MKIIProject 300
MSRP $1,995
Gentleman Open Heart
TissotGentleman Open Heart
MSRP $1,025
What people say

Owners + reviewers, side by side

Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.

MKII Project 300

Owners widely praise the MKII Project 300 for its balanced aesthetic, with one owner noting its lume "glows like a torch." Reviewers highlight its design as a dive watch inspired by the Omega Seamaster 300, emphasizing high legibility with a bold yet balanced appearance. One owner found the 41.25mm case fit their wrist perfectly. Overall, owners and reviewers rate the MKII Project 300 highly for its striking lume and well-proportioned dive watch design.

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.

At a glance

14 of 29 specs differ
Diameter
Project 30041.25mm
Gentleman Open Heart40mm
Power Reserve
Project 300
Gentleman Open Heart80h
Water Resistance
Project 300300m
Gentleman Open Heart100m
MSRP
Project 300$1,995
Gentleman Open Heart$1,025

Full specifications

Case

6 specs
Category
Chronograph
Diameter
41.25mm
40mm
Thickness
13.45mm
11.5mm
Lug-to-Lug
48mm
40mm
Lug Width
20mm
21mm
Water Resistance
300m
100m

Crystal & Dial

5 specs
Crystal Shape
Flat
Domed
AR Coating
Inner
Yes
Dial Color
Silver
Indices
Applied
Indexes
Lume
None
Super-LumiNova ®

Movement

2 specs
Caliber
ETA 2824-2
11.5'
Power Reserve
80h

Pricing

1 specs
MSRP
$1,995
$1,025
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