Side by side

Seiko Prospex SeavsZelos Skyraider 40 Skeleton

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

Prospex Sea
SeikoProspex Sea
MSRP $1,100
Skyraider 40 Skeleton
ZelosSkyraider 40 Skeleton
MSRP $1,999

At a glance

14 of 29 specs differ
Diameter
Prospex Sea41.3mm
Skyraider 40 Skeleton40mm
Power Reserve
Prospex Sea72h
Skyraider 40 Skeleton40h
Water Resistance
Prospex Sea300m
Skyraider 40 Skeleton50m
MSRP
Prospex Sea$1,100
Skyraider 40 Skeleton$1,999

Full specifications

Case

6 specs
Category
Diver
Skeleton
Diameter
41.3mm
40mm
Thickness
12.5mm
8.2mm
Lug-to-Lug
48.2mm
40mm
Material
Stainless Steel
Titanium
Water Resistance
300m
50m

Crystal & Dial

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

Movement

4 specs
Caliber
6R55
Swiss Skeletonised Marvin 700
Type
Automatic
Manual
Power Reserve
72h
40h
Jewels
24
25

Pricing

1 specs
MSRP
$1,100
$1,999

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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 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.

Zelos Skyraider 40 Skeleton

The Zelos Skyraider 40 Skeleton is noted for its skeletonized dial and the use of BGW9 and C3 Super-LumiNova for legibility. It is powered by a manual-wind ETA 6498 movement, offering a 44-hour power reserve. On balance, the Zelos Skyraider 40 Skeleton is seen as a cool-looking option, though availability is a factor.

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