Side by side

Maen Skymaster 38 MKIIIvsSeiko Prospex Sea

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

Skymaster 38 MKIII
MaenSkymaster 38 MKIII
MSRP $1,679
Prospex Sea
SeikoProspex Sea
MSRP $1,100

At a glance

15 of 29 specs differ
Diameter
Skymaster 38 MKIII38mm
Prospex Sea41.3mm
Power Reserve
Skymaster 38 MKIII40h
Prospex Sea72h
Water Resistance
Skymaster 38 MKIII100m
Prospex Sea300m
MSRP
Skymaster 38 MKIII$1,679
Prospex Sea$1,100

Full specifications

Case

7 specs
Category
Chronograph
Diver
Diameter
38mm
41.3mm
Thickness
13.4mm
12.5mm
Lug-to-Lug
48.2mm
Lug Width
20mm
Material
316L Stainless Steel
Stainless Steel
Water Resistance
100m
300m

Crystal & Dial

4 specs
Crystal
Domed Sapphire
Sapphire
AR Coating
Inner
Anti-reflective coating on inner surface
Dial Color
M6.1.1
Black
Lume
None
LumiBrite on hands, index(es) and bezel

Movement

3 specs
Caliber
Sellita SW510mb
6R55
Power Reserve
40h
72h
Jewels
25
24

Pricing

1 specs
MSRP
$1,679
$1,100

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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.

Maen Skymaster 38 MKIII

The Maen Skymaster 38 MKIII is praised for its refined case, impressive fit and finish, and compact 38mm size, which offers a premium feel with a sharp, legible dial and well-executed applied markers. Reviewers note the sweet winding action and the vintage-inspired brown sunburst dial with dauphine hands and lollipop register pointers. The watch is powered by a manual-wind Sellita SW510Mb movement with a 63-hour power reserve. Accuracy figures vary, with one reviewer reporting +7 seconds per day and another stating a tolerance of +/-15 seconds per day. On balance, owners and reviewers appreciate the Maen Skymaster 38 MKIII for its refined vintage-inspired design and compact dimensions at its price point.

From video reviewers

The 38mm case size is a key strength for the Maen Skymaster 38 MKIII. Reviewers noted the excellent quality-price ratio for a Swiss-made chronograph.

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.

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