Massena LAB GeometervsMaen Skymaster 38 Mkiii

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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.

Geometer

Skymaster 38 Mkiii
Diameter
39mm
38mm
Thickness
9mm
lowest
13.4mm
Water Resistance
50m
100m
highest
Power Reserve
58h
n/a
MSRP
$3,495
$1,679
lowest
Movement
Sellita SW510
Sellita SW510
Case
6 specsCrystal & Dial
5 specsMovement
3 specsPricing
1 specsReviews
Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.
The Massena LAB Geometer is lauded for its clever reimagining of a mid-1950s chronograph, featuring a striking dial and distinctive hands, though some find these hands slightly challenging to differentiate. Owners widely appreciate the smooth winding action of the manual-wind Sellita SW510 movement housed within its 39mm polished stainless steel case. One owner finds the dial too busy with multiple rings and questions the value proposition for a microbrand utilizing an off-the-shelf movement at its price point. Overall, owners and reviewers rate the Massena LAB Geometer highly for its vintage-inspired design and enjoyable manual-winding experience.
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.
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