BOLDR Supply Co. Field Medic StealthvsFortis Stratoliner S-41
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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.

Field Medic Stealth

Stratoliner S-41
Diameter
38mm
41mm
Lug-to-Lug
44mm
n/a
Thickness
12.2mm
lowest
14mm
Water Resistance
200m
200m
Power Reserve
n/a
60h
MSRP
$299
lowest
$5,450
Movement
Seiko VK64
Fortis WERK 17
Case
5 specsCrystal & Dial
1 specsMovement
5 specsPricing
1 specsReviews
Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.
The BOLDR Supply Co. Field Medic Stealth is widely praised for its 38mm case size and lightweight titanium construction, making it exceptionally wearable for daily use. Owners appreciate its robust 200m water resistance and sapphire crystal, contributing to its durable feel. The pulsometer function is noted as a unique and fun, if not always practical, addition that serves as a conversation starter. Some owners find the lume to be weak, and the small subdials can be difficult to read. One owner notes the bead-blasted titanium case is prone to scratches and feels almost too light on the included NATO strap. Overall, owners rate the BOLDR Supply Co. Field Medic Stealth highly for its comfortable wearability and unique functional features at its price point.
Owners widely praise the Fortis Stratoliner S-41 for its intentional orange date wheel, space blue lume, and all-brushed case finishing. Reviewers and owners alike highlight the innovative WERK 17 movement and its purpose-built design for space. However, one owner found it wore too large due to its case thickness and lug-to-lug distance, while another noted the dial's small text and flat design as potential drawbacks. On balance, owners and reviewers appreciate the Stratoliner S-41 for its unique design details and robust build, though its wearability and dial presentation are points of contention for some.
The Fortis Werk 17 movement—space-tested and manufacture-built—anchors a tank-like tool watch with exceptional lume brightness, anti-reflective dial treatment, and a quality bracelet with quick-adjust clasp. The 41mm case wears considerably larger due to long strut lugs extending to 50.4mm, a utilitarian design choice that dominates wrist presence even on smaller wrists.
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