Side by side

Sinn 358 DIAPALvsSeiko Prospex SPEEDTIMER

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

358 DIAPAL
Sinn358 DIAPAL
MSRP $4,255
Prospex SPEEDTIMER
SeikoProspex SPEEDTIMER
MSRP $3,000

At a glance

17 of 29 specs differ
Diameter
358 DIAPAL42mm
Prospex SPEEDTIMER42.5mm
Power Reserve
358 DIAPAL48h
Prospex SPEEDTIMER45h
Water Resistance
358 DIAPAL100m
Prospex SPEEDTIMER100m
MSRP
358 DIAPAL$4,255
Prospex SPEEDTIMER$3,000

Full specifications

Case

7 specs
Category
Tool
Chronograph
Diameter
42mm
42.5mm
Thickness
15mm
15.1mm
Lug-to-Lug
50mm
Lug Width
22mm
20mm
Finish
satinized
Brushed and polished
Caseback
Solid

Crystal & Dial

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

Movement

4 specs
Caliber
LJP L100
8R46
Power Reserve
48h
45h
Jewels
26
34
Complications
GMT, Date, Chronograph
None

Pricing

1 specs
MSRP
$4,255
$3,000

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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.

Sinn 358 DIAPAL

The Sinn 358 DIAPAL is widely praised as a handsome, unfussy tool watch with excellent legibility and solid construction, featuring a reliable and exact second timezone complication. Owners and reviewers highlight its DIAPAL oil-free escapement and Ar-Dehumidifying technology for contributing to its accuracy, and note the 42mm brushed stainless steel case is well-sized. One reviewer flags the skeletonized GMT hand as sometimes lacking legibility. Overall, owners and reviewers rate the Sinn 358 DIAPAL highly for its robust build and practical travel watch functionality.

Seiko Prospex SPEEDTIMER

Owners widely praise the Seiko Prospex SPEEDTIMER for its attractive vintage-inspired design and compact 39mm size, with one owner finding the red dial unique and gorgeous. Reviewers and owners note the solar-powered quartz movement, with one owner considering $700 expensive for this specification and another wishing for a thinner case. The SPEEDTIMER is described as a sturdy and reliable everyday watch, though one owner questioned its resale value. Overall, owners and reviewers appreciate the Seiko Prospex SPEEDTIMER for its stylish, compact design and solar functionality, despite some finding the price point and case thickness slightly high.

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