Glycine Combat Sub SportvsZelos Mako 4
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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 Sport

Mako 4
Diameter
39mm
40mm
Thickness
11.2mm
lowest
12.2mm
Water Resistance
300m
300m
Power Reserve
38h
n/a
MSRP
$540
lowest
$599
Movement
Sellita SW200-1
Miyota 9015
Case
5 specsCrystal & Dial
6 specsMovement
5 specsPricing
1 specsReviews
Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.
Owners widely praise the Glycine Combat Sub Sport for its thinness, with various sources citing measurements between 10.4mm and 10.8mm, and its comfortable wearability due to contoured lugs that make it feel smaller than its 39mm case size. Reviewers and owners consistently highlight its value, with some considering it the best dive watch under $400 and noting its refined finishing and smooth winding action. However, opinions are mixed on its design, with some finding it unique and others plain or questioning its homage status. Lume quality is a point of contention, with some finding it subpar and hard to read at night, while others describe it as marginally better than a Seiko SKX007. Some owners have also reported inconsistent power reserve or stem issues. Overall, owners and reviewers rate the Glycine Combat Sub Sport highly for its exceptional thinness and value proposition at the price point.
Owners widely praise Zelos' dial finishing, with specific admiration for blued markers and hands, and the unique titanium bezel insert. Reviewers highlight the Mako 4's impressive case finishing and fully lumed ceramic bezel for its price point, noting the boxed sapphire crystal and wavy dial texture contribute to a vintage feel. The Sellita SW200 movement is described as reliable, with one owner reporting accuracy of -0.3 seconds per day. However, the crown can be difficult to grip, and the winding mechanism offers resistance when screwing down, while the watch's height may hinder wearability under a suit cuff. The tropic rubber strap is considered excellent, in contrast to a stiff leather option. On balance, owners and reviewers rate the Zelos Mako 4 highly for its exceptional dial and case finishing at its price point.
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