Circula Watches AquaSport IIvsSeiko Prospex Sea 1965 Heritage Diver's Watch

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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.

Circula Watches AquaSport II at true scale

AquaSport II

Seiko Prospex Sea 1965 Heritage Diver's Watch at true scale

Prospex Sea 1965 Heritage Diver's Watch

Diameter

40mm

40mm

Lug-to-Lug

46mm

lowest

46.4mm

Thickness

12.6mm

lowest

13mm

Water Resistance

200m

300m

highest

Power Reserve

41h

72h

highest

MSRP

n/a

$1,300

Movement

Sellita SW200-1

Seiko 6R55

Case

3 specs
Thickness
12.6mm
13mm
Lug-to-Lug
46mm
46.4mm
Water Resistance
200m
300m

Crystal & Dial

4 specs
Crystal Shape
n/a
Curved
AR Coating
n/a
Anti-reflective coating on inner surface
Dial Color
Blue
n/a
Lume
None
LumiBrite on hands, index(es) and bezel

Movement

3 specs
Caliber
Sellita SW200-1
Seiko 6R55
Power Reserve
41h
72h
Jewels
0
24

Pricing

1 specs
MSRP
n/a
$1,300
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Reviews

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

Circula Watches AquaSport II

Owners and reviewers widely praise the Circula Watches AquaSport II for its 1970s-inspired design, comfortable 40mm wearability, and attractive dial with applied indices that catches light and shadow. The hand-crafted case finishing is described as incredible, and the lume is spectacular. The bezel action is noted as subtle and solid, and the Sellita SW200-1 automatic movement is considered reliable. The watch is competitively priced starting at EUR 599, with owners finding it offers significant value for the money, often including extra straps. Overall, owners and reviewers rate the Circula Watches AquaSport II highly for its exceptional finishing and value proposition at its price point.

Seiko Prospex Sea 1965 Heritage Diver's Watch

Owners widely praise the Seiko Prospex Sea 1965 Heritage Diver's Watch for its refined engineering, comfortable 40mm case, and improved 300m water resistance. The watch is noted for its better build quality and finishing compared to some alternatives, featuring a mix of polished and brushed surfaces, with specific callouts for the jewel-toned teal dial with a rippling-water pattern. Some owners consider the price fair, while others suggest it is too high. Accuracy figures vary, with some owners reporting their 6R55 movement performs well within +/- 10 seconds per day, while others note theirs runs slow or have concerns about QC for the price. The bracelet, while improved, lacks modern features like quick-release or extensive micro-adjustments. Overall, owners and reviewers rate the Seiko Prospex Sea 1965 Heritage Diver's Watch highly for its refined design and build quality at its price point.