Side by side

Sinn 144 St DIAPALvsSeiko Prospex SPEEDTIMER Seiko 145th Anniversary Limited Edition

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

What people say

Owners + reviewers, side by side

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

Sinn 144 St DIAPAL

The Sinn 144 St DIAPAL is widely praised for its flawless bead-blasting, comfortable 41mm wearability, and legible presentation of information, including a pulsemeter and tachymeter scales. Owners appreciate its quality and confidence-inspiring feel, with one noting excellent timekeeping at 5 seconds slow over 4 days. However, the reset pusher is stiff, and strap options are limited by the integrated case. Some find the 12-hour UTC hand less intuitive, and one owner considers it too sporty for a sole daily watch. On balance, owners rate the Sinn 144 St DIAPAL highly for its robust build and functional, legible dial at its price point.

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.

At a glance

18 of 29 specs differ
Diameter
144 St DIAPAL41mm
Prospex SPEEDTIMER Seiko 145th Anniversary Limited Edition42mm
Power Reserve
144 St DIAPAL48h
Prospex SPEEDTIMER Seiko 145th Anniversary Limited Edition45h
Water Resistance
144 St DIAPAL200m
Prospex SPEEDTIMER Seiko 145th Anniversary Limited Edition100m
MSRP
144 St DIAPAL$4,428
Prospex SPEEDTIMER Seiko 145th Anniversary Limited Edition$2,500

Full specifications

Case

7 specs
Category
Tool
Chronograph
Diameter
41mm
42mm
Thickness
14.2mm
14.6mm
Lug-to-Lug
49.5mm
Finish
bead-blasted
Water Resistance
200m
100m
Caseback

Crystal & Dial

5 specs
Crystal Shape
Curved
AR Coating
Underside
Anti-reflective coating on inner surface
Dial Color
Anthracite
Indices
Lume
Luminescent
LumiBrite on hands and index(es)

Movement

5 specs
Caliber
LJP 8000
8R48
Beat Rate
28,800 vph
0 vph
Power Reserve
48h
45h
Jewels
28
34
Complications
GMT, Date, Chronograph, Tachymeter
None

Pricing

1 specs
MSRP
$4,428
$2,500
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