Glycine Combat Sub VintagevsSTEELDIVE SD1988
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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.

Combat Sub Vintage

SD1988
Diameter
42mm
55.7mm
Thickness
12.5mm
lowest
15.2mm
Water Resistance
200m
1200m
highest
Power Reserve
38h
n/a
MSRP
$540
$339
lowest
Movement
Sellita SW200-1
Seiko NH35
Case
7 specsCrystal & Dial
5 specsMovement
5 specsPricing
1 specsReviews
Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.
The Glycine Combat Sub Vintage is widely praised by owners for its perfect proportions and slim profile, with one owner noting a thinness of 10.4mm. The unique, non-homage design is a significant draw. However, some owners report sub-par lume and inconsistent power reserve. One owner of a 39mm variant also noted a slightly off-color lume pip on the chapter ring. Overall, owners rate the Glycine Combat Sub Vintage highly for its wearability and distinct design at its price point.
The slim 10.5mm thickness is a consensus strength. Reviewers noted the two-tone option as an aesthetic appeal. No consensus weakness was identified.
Owners widely praise the STEELDIVE SD1988's case finishing, noting it is surprisingly good for the $180 price point, with circular brushing on top and notably better linear brushing on the case back. The lume is also considered excellent. The watch features a Seiko NH35 automatic movement and has a 1200m water resistance rating. Its large 55.7mm case size is noted as a potential challenge for photography. On balance, owners rate the STEELDIVE SD1988 highly for its exceptional value, particularly the finishing and lume at its accessible price.
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