Aquastar Deepstar IIvsKnot Watches Knot AT1-40SSV

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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.

Aquastar Deepstar II at true scale

Deepstar II

Knot Watches Knot AT1-40SSV at true scale

Knot AT1-40SSV

Diameter

37mm

40mm

Lug-to-Lug

46mm

n/a

Thickness

12mm

11mm

lowest

Water Resistance

200m

200m

Power Reserve

n/a

42h

MSRP

n/a

$628

Movement

Sellita SW290-1

Miyota 9015

Case

5 specs
Diameter
37mm
40mm
Thickness
12mm
11mm
Lug-to-Lug
46mm
n/a
Lug Width
37mm
n/a
Material
Stainless Steel
316L Stainless Steel

Crystal & Dial

1 specs
Dial Color
White
Black

Movement

3 specs
Caliber
Sellita SW290-1
Miyota 9015
Power Reserve
n/a
42h
Jewels
0
24

Pricing

1 specs
MSRP
n/a
$628
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Reviews

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

Aquastar Deepstar II

Owners widely praise the Aquastar Deepstar II for its comfortable 37mm wearability, vintage aesthetic, and excellent value. Reviewers and owners alike highlight its smooth-winding Sellita SW290-1 movement, remarkable timekeeping, and legible dial with excellent lume. The updated beads-of-rice bracelet with a diver extension is considered a worthwhile upgrade, and the included grey tropic strap is notably supple. Some owners, however, find the 37mm case diameter too small, despite the 47mm lug-to-lug contributing to a larger perceived wrist presence. One owner dislikes the small seconds subdial, finding it interrupts the dial's aesthetic. Overall, owners and reviewers rate the Aquastar Deepstar II highly for its vintage charm, comfortable wearability, and strong value proposition.

From video reviewers

The vintage design and 37mm case size are praised. The price point is considered a strong point by one reviewer, while another suggests it may limit its appeal.

Knot Watches Knot AT1-40SSV

Owners widely praise the Knot AT1-40SSV for its versatile 40mm size and excellent wearability, with many appreciating its surprising lightness and the clean dial design. The lume is noted as strong, and accuracy is reported around +4 seconds per day. Some owners find the initial stiffness of the premium strap a minor issue, though its well-machined buckle is well-regarded. One owner flags the small crown as a significant drawback due to its size and placement. On balance, owners rate the Knot AT1-40SSV highly for its comfortable wearability and attractive dial at the price point.