Aquastar Benthos ProfessionalvsYema Diver
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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.

Benthos Professional

Diver
Diameter
42mm
39.5mm
Thickness
13.7mm
10.9mm
lowest
Water Resistance
300m
highest
200m
MSRP
n/a
$990
Movement
Sellita SW200-1
Sellita SW200-1
Case
5 specsCrystal & Dial
1 specsMovement
1 specsPricing
1 specsReviews
Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.
The Aquastar Benthos Professional is widely praised for its significantly slimmer 13.9mm case, which contributes to comfortable everyday wear and a sleek profile, and its ultra-legible dial. Reviewers note its well-tensioned bezel and an improved beads-of-rice bracelet. Some find the 42mm case size substantial for a dive watch, and its 38-hour power reserve is considered unremarkable. The watch is priced at $1,290 during pre-order. Overall, owners and reviewers rate the Aquastar Benthos Professional highly for its comfortable wearability and legible dial at the price.
One owner reported a water ingress issue on their Yema Diver the first time it got wet in a lake, despite rinsing and inspecting the watch and bezel. Another owner notes this manual wind Yema Diver has a cool patina but is unlikely to be waterproof or gain value. Overall, owners view the Yema Diver as a fun second watch rather than an investment.
The Swiss Sellita movement is a notable feature. Reviewers did not reach a consensus on any weaknesses.
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