Knot Watches ATC-40vsMaen Skymaster 38 Mkiii

ATC-40
Knot WatchesATC-40

Ref. atc-40svjprdgs-ld-16svsv·MSRP $1,257

Skymaster 38 Mkiii
MaenSkymaster 38 Mkiii

Ref. skymaster-38-m6-1-1·MSRP $1,679

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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.

Knot Watches ATC-40 at true scale

ATC-40

Maen Skymaster 38 Mkiii at true scale

Skymaster 38 Mkiii

Diameter

40mm

38mm

Thickness

13.5mm

13.4mm

lowest

Water Resistance

100m

100m

Power Reserve

45h

n/a

MSRP

$1,257

lowest

$1,679

Movement

Seiko NE88

Sellita SW510

Case

4 specs
Diameter
40mm
38mm
Thickness
13.5mm
13.4mm
Lug-to-Lug
n/a
n/a
Lug Width
n/a
n/a

Crystal & Dial

2 specs
Crystal
Sapphire
Domed Sapphire
Dial Color
Red
M6.1.1

Movement

2 specs
Caliber
Seiko NE88
Sellita SW510
Power Reserve
45h
0h

Pricing

1 specs
MSRP
$1,257
$1,679
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Reviews

Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.

Knot Watches ATC-40

Knot Watches ATC-40 owners widely praise its case finishing, with one noting Sallaz polishing that distinguishes it from competitors, and appreciate the value and craftsmanship at its price point. The watch is described as well-made with a discrete dial featuring subtle gold and silver powder, and a modern look complemented by a deep burgundy textured dial and refined mesh bracelet. While some find it wears smaller than its 40mm case size, one owner dislikes the 18mm lug width, and another notes the premium strap is stiff but well-made with a nice deployment buckle. A reviewer also points out the very small crown appears undersized and poorly placed near the bottom of the case. Overall, owners rate the Knot Watches ATC-40 highly for its craftsmanship and value, with its distinctive case finishing being a significant draw.

Maen Skymaster 38 Mkiii

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.

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.