Side by side

Seiko Prospex SPEEDTIMER MechanicalvsZelos Spearfish 3

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

Prospex SPEEDTIMER Mechanical
SeikoProspex SPEEDTIMER Mechanical
MSRP $995
Spearfish 3
ZelosSpearfish 3
MSRP $749

At a glance

13 of 29 specs differ
Diameter
Prospex SPEEDTIMER Mechanical39.5mm
Spearfish 340mm
Power Reserve
Prospex SPEEDTIMER Mechanical72h
Spearfish 340h
Water Resistance
Prospex SPEEDTIMER Mechanical200m
Spearfish 3200m
MSRP
Prospex SPEEDTIMER Mechanical$995
Spearfish 3$749

Full specifications

Case

5 specs
Category
Chronograph
Diver
Diameter
39.5mm
40mm
Thickness
12mm
11.5mm
Lug-to-Lug
44.5mm
40mm
Material
Stainless Steel
316L Stainless Steel

Crystal & Dial

4 specs
Crystal Shape
Curved
Flat
AR Coating
Anti-reflective coating on inner surface
Inner
Dial Color
Black
Diver - Forged Carbon
Lume
LumiBrite on hands and index(es)
None

Movement

3 specs
Caliber
6R55
La Joux-Perret G100
Power Reserve
72h
40h
Jewels
24
25

Pricing

1 specs
MSRP
$995
$749

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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 Mechanical

The Seiko Prospex SPEEDTIMER Mechanical is praised for its visually appealing design and comfortable wearability, with owners frequently using its chronograph function for daily tasks. Reviewers note its clean dial layout and LumiBrite treated hands and markers, and one source highlights the 72-hour power reserve of the 6R55 movement. However, some owners criticize its chronograph functionality and the 24-hour subdial. On balance, owners and reviewers rate the Seiko Prospex SPEEDTIMER Mechanical highly for its daily usability and refined aesthetics.

Zelos Spearfish 3

The Zelos Spearfish 3 is widely praised for its exceptional finishing, with razor-sharp polish and flawless brushed transitions that owners feel exceed its price point. The 40mm case is noted for its wearability, and the La Joux-Perret G100 movement offers a 68-hour power reserve, with reported accuracy averaging +2.6 seconds per day. Reviewers highlight the exceptionally smooth bi-directional bezel and a tool-less micro-adjustment clasp described as best-in-class among microbrands. The sapphire sandwich construction and lumed bezel are also cited as desirable features. Overall, owners and reviewers rate the Zelos Spearfish 3 highly for its outstanding finishing and value at its price point.

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