Side by side

Raven Custom 39mm DivervsSeiko Prospex Sea

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

Custom 39mm Diver
RavenCustom 39mm Diver
MSRP $550
Prospex Sea
SeikoProspex Sea
MSRP $1,100
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 Sea

Seiko Prospex Sea models are widely praised for their excellent build quality, value for money, and comfortable wearability, with many appreciating the vintage-inspired designs and robust construction. Owners note the silicone straps are surprisingly comfortable and well-finished, and the Lumibrite lume is excellent. However, some find the 44.3mm size and thickness too large for smaller wrists, though others report the sizing as perfect. The 6R15 movement in some variants offers accuracy around +4 seconds per day with a 50-hour power reserve, while newer movements offer more. Some models are criticized for a bracelet width not matching the case size or a rudimentary clasp for their price point. Overall, owners and reviewers rate the Seiko Prospex Sea highly for its impressive case work and finishing at its price point.

At a glance

12 of 29 specs differ
Diameter
Custom 39mm Diver39mm
Prospex Sea41.3mm
Power Reserve
Custom 39mm Diver40h
Prospex Sea72h
Water Resistance
Custom 39mm Diver200m
Prospex Sea300m
MSRP
Custom 39mm Diver$550
Prospex Sea$1,100

Full specifications

Case

5 specs
Category
Diver
Diameter
39mm
41.3mm
Thickness
12mm
12.5mm
Lug-to-Lug
46mm
48.2mm
Water Resistance
200m
300m

Crystal & Dial

3 specs
AR Coating
Inner
Anti-reflective coating on inner surface
Dial Color
Black
Lume
None
LumiBrite on hands, index(es) and bezel

Movement

3 specs
Caliber
NH35
6R55
Power Reserve
40h
72h
Jewels
25
24

Pricing

1 specs
MSRP
$550
$1,100
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