Side by side

Seiko Prospex SPEEDTIMER MechanicalvsYema Diver

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

Prospex SPEEDTIMER Mechanical
SeikoProspex SPEEDTIMER Mechanical
MSRP $995
Diver
YemaDiver
MSRP $990

At a glance

11 of 29 specs differ
Diameter
Prospex SPEEDTIMER Mechanical39.5mm
Diver39.5mm
Power Reserve
Prospex SPEEDTIMER Mechanical72h
Diver40h
Water Resistance
Prospex SPEEDTIMER Mechanical200m
Diver200m
MSRP
Prospex SPEEDTIMER Mechanical$995
Diver$990

Full specifications

Case

4 specs
Category
Chronograph
Diver
Thickness
12mm
10.95mm
Lug-to-Lug
44.5mm
Material
Stainless Steel
316L Stainless Steel

Crystal & Dial

3 specs
Crystal Shape
Curved
Flat
AR Coating
Anti-reflective coating on inner surface
Inner
Lume
LumiBrite on hands and index(es)
None

Movement

3 specs
Caliber
6R55
Sellita SW200
Power Reserve
72h
40h
Jewels
24
25

Pricing

1 specs
MSRP
$995
$990

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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.

Yema Diver

One owner reported a water ingress issue on their Yema Diver the first time it got wet in a lake, despite rinsing and inspecting the watch and bezel. Another owner notes this manual wind Yema Diver has a cool patina but is unlikely to be waterproof or gain value. Overall, owners view the Yema Diver as a fun second watch rather than an investment.

From video reviewers

The Swiss Sellita movement is a notable feature. Reviewers did not reach a consensus on any weaknesses.

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