Maen Skymaster 38 MkiiivsOmega Speedmaster Calibre 321 Chronograph 39 7mm


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Measurements
Catalog photos are all shot at the same flattering size. These aren't: every case below shares one millimeter scale.

Skymaster 38 Mkiii

Speedmaster Calibre 321 Chronograph 39 7mm
Diameter
38mm
39.7mm
Lug-to-Lug
n/a
48mm
Thickness
13.4mm
lowest
13.7mm
Water Resistance
100m
highest
50m
Power Reserve
n/a
55h
MSRP
$1,679
lowest
$17,300
Movement
Sellita SW510
Omega 321
Case
7 specsCrystal & Dial
3 specsMovement
6 specsPricing
1 specsReviews
Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.
The Maen Skymaster 38 MKIII is praised for its refined case, impressive fit and finish, and compact 38mm size, which is considered a positive for a modern mechanical chronograph. Reviewers highlight its clean dial, sharp legibility, and well-executed applied markers, with one noting a brown sunburst dial evoking vintage tropical effects. The winding action is described as sweet, and the watch is powered by a Sellita SW510Mb manual-wind movement. Accuracy figures vary, with one source reporting an average of +7 seconds per day and another stating a tolerance of +/-15 seconds per day, and both note a 63-hour power reserve. Overall, reviewers rate the Maen Skymaster 38 MKIII highly for its vintage-inspired design and premium feel at its price point.
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.
Owners and reviewers widely praise the Omega Speedmaster Calibre 321 Chronograph 39.7mm for its historical fidelity to the 105.003, its superior finishing, and the tactile feel of its pushers and bracelet, with some considering it the ultimate Speedmaster. The movement's copper-plated finish and column-wheel chronograph mechanism are highlighted as distinguishing features. However, its high price, limited availability, and lack of hacking, anti-magnetism, and crown guards are noted drawbacks. Accuracy varies, with one owner reporting +20 seconds per day out of the box, while others cite better performance. On balance, owners and reviewers rate the Omega Speedmaster Calibre 321 Chronograph 39.7mm highly for its blend of vintage aesthetic, superb movement finishing, and comfortable wearability, justifying its premium price for enthusiasts.
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