Aquastar Deepstar IIvsMarathon MSAR (Medium Search & Rescue) Diver's 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

MSAR (Medium Search & Rescue) Diver's Automatic
Diameter
37mm
36mm
Lug-to-Lug
46mm
n/a
Thickness
12mm
lowest
18mm
Water Resistance
200m
300m
highest
MSRP
n/a
$1,800
Movement
Sellita SW290-1
Sellita SW200-1
Case
6 specsMovement
2 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.
The Marathon MSAR (Medium Search & Rescue) Diver's Automatic is widely praised for its utilitarian design, exceptional legibility, and robust build quality, meeting ISO 6425 dive watch standards and approved for military use. Reviewers highlight its bright tritium lume for excellent visibility in darkness and its durable, no-nonsense construction suitable for demanding conditions. The watch is noted for its comfortable wearability, though one reviewer found the stock rubber strap required modification. Priced at $900 CAD, the Marathon MSAR (Medium Search & Rescue) Diver's Automatic is a sober tool watch assembled in Switzerland. Overall, reviewers rate the Marathon MSAR (Medium Search & Rescue) Diver's Automatic highly for its uncompromising focus on utility, durability, and legibility.
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