Aquastar Deepstar IIvsBreitling Superocean Heritage B31 Automatic

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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.

Deepstar II

Superocean Heritage B31 Automatic
Diameter
37mm
42mm
Lug-to-Lug
46mm
n/a
Thickness
12mm
lowest
12.0mm
Water Resistance
200m
200m
Power Reserve
n/a
78h
MSRP
n/a
$6,500
Movement
Sellita SW290-1
Breitling B31
Case
5 specsCrystal & Dial
1 specsMovement
4 specsPricing
1 specsReviews
Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.
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.
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.
Owners widely praise the Breitling Superocean Heritage B31 Automatic for its revived, characterful design embracing '50s charm and its comfortable fit, with some finding the 42mm case size preferable to larger options. Reviewers highlight the new B31 automatic movement, noting its 78-hour power reserve and COSC certification, along with stylish Milanese bracelets and a thinner, more ergonomic case. Some owners find the watch to be the heaviest they own but also the most comfortable, with lugs that hug the wrist. However, the pared-back dive bezel is noted by some as potentially impacting legibility, and the white date wheel at 6 o'clock could be divisive. Criticism is directed at the movement at its price point by some community members, while others appreciate its quality and COSC certification. On balance, owners and reviewers rate the Breitling Superocean Heritage B31 Automatic highly for its revived design and comfortable wearability, supported by its new B31 automatic movement.
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