Side by side

Raven Custom 39mm DivervsSeiko Prospex SPEEDTIMER Mechanical

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

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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.

Raven Custom 39mm Diver

Owners widely praise the Raven Custom 39mm Diver for its ideal 39mm size, excellent legibility, and effective lume. The bezel action is consistently highlighted as a strong point, and the overall build is considered a favorite among microbrand divers. One owner found the stock bracelet too basic for the polished case, preferring an aftermarket jubilee. The movement is the Seiko NH35 automatic, and it offers 200m water resistance. Overall, owners rate the Raven Custom 39mm Diver highly for its wearability and functional design at the price point.

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.

At a glance

12 of 29 specs differ
Diameter
Custom 39mm Diver39mm
Prospex SPEEDTIMER Mechanical39.5mm
Power Reserve
Custom 39mm Diver
Prospex SPEEDTIMER Mechanical72h
Water Resistance
Custom 39mm Diver200m
Prospex SPEEDTIMER Mechanical200m
MSRP
Custom 39mm Diver$550
Prospex SPEEDTIMER Mechanical$995

Full specifications

Case

4 specs
Category
Chronograph
Diameter
39mm
39.5mm
Thickness
0mm
12mm
Lug-to-Lug
0mm
44.5mm

Crystal & Dial

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

Movement

3 specs
Caliber
Seiko NH35
Seiko 6R55
Power Reserve
0h
72h
Jewels
0
24

Pricing

1 specs
MSRP
$550
$995
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