Knot Watches ATC-40vsLongines AVIGATION BIGEYE

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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.

ATC-40

AVIGATION BIGEYE
Diameter
40mm
41mm
Lug-to-Lug
n/a
48.7mm
Thickness
13.5mm
lowest
14.5mm
Water Resistance
100m
highest
30m
Power Reserve
45h
n/a
MSRP
$1,257
lowest
$4,400
Movement
Seiko NE88
Longines L688.5
Case
6 specsCrystal & Dial
1 specsMovement
2 specsPricing
1 specsReviews
Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.
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.
Owners and reviewers widely praise the Longines Avigation Bigeye for its vintage military aesthetic, legible dial with a unique "big eye" subdial, and tactile chronograph pusher action. The 41mm steel case wears well, and the boxed sapphire crystal is a notable feature. However, some find the 14.45mm thickness typical for its movement, and the 30-minute sub-dial's three-minute hash marks can compromise reading speed. The stock strap is generally considered unremarkable, and the lack of drilled lugs makes strap changes less convenient. Some owners report minor QC issues with chronograph hand alignment and a loud rotor. Overall, owners rate the Longines Avigation Bigeye highly for its cohesive vintage design and appealing chronograph functionality at its price point.
The titanium case offers exceptional lightness and balance on the wrist. Reviewers did not reach a consensus on any weaknesses.
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