Side by side

Seiko Prospex SPEEDTIMER Seiko 145th Anniversary Limited EditionvsTissot Gentleman Open Heart

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

At a glance

13 of 29 specs differ
Diameter
Prospex SPEEDTIMER Seiko 145th Anniversary Limited Edition42mm
Gentleman Open Heart40mm
Power Reserve
Prospex SPEEDTIMER Seiko 145th Anniversary Limited Edition45h
Gentleman Open Heart80h
Water Resistance
Prospex SPEEDTIMER Seiko 145th Anniversary Limited Edition100m
Gentleman Open Heart100m
MSRP
Prospex SPEEDTIMER Seiko 145th Anniversary Limited Edition$2,500
Gentleman Open Heart$1,025

Full specifications

Case

4 specs
Diameter
42mm
40mm
Thickness
14.6mm
11.5mm
Lug-to-Lug
49.5mm
40mm
Lug Width
20mm
21mm

Crystal & Dial

5 specs
Crystal Shape
Curved
Domed
AR Coating
Anti-reflective coating on inner surface
Yes
Dial Color
Black
Silver
Indices
Applied
Indexes
Lume
LumiBrite on hands and index(es)
Super-LumiNova ®

Movement

3 specs
Caliber
8R48
11 1/2'''
Power Reserve
45h
80h
Jewels
34
25

Pricing

1 specs
MSRP
$2,500
$1,025

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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.

Seiko Prospex SPEEDTIMER Seiko 145th Anniversary Limited Edition

Owners widely praise the Prospex SPEEDTIMER Seiko 145th Anniversary Limited Edition for its refined presence and intricate dial patterns, with some favoring its unique red dial and steel bezel over other Speedtimer models. However, some owners criticize the 24-hour subdial as useless, the date window as recessed, and the stock bracelet as difficult to fit, while others find the pushers stick out too much. One owner notes the $995 price point is high for the 6R55 movement, suggesting a lower range, though others appreciate the Seiko finishing and charm. On balance, owners rate the Prospex SPEEDTIMER Seiko 145th Anniversary Limited Edition well for its unique aesthetic and finishing, despite some functional and value concerns.

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.

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