Serica Ref. 5303 Diving ChronometervsTraska Seafarer Charcoal
lug2lug doesn't sell watches. Buy links open the brand's or seller's own site. Some links are affiliate links: lug2lug may earn a commission at no extra cost to you. Disclosures
Measurements
Catalog photos are all shot at the same flattering size. These aren't: every case below shares one millimeter scale.

Ref. 5303 Diving Chronometer

Seafarer Charcoal
Diameter
39mm
40mm
Lug-to-Lug
46.5mm
n/a
Thickness
12.2mm
n/a
Water Resistance
300m
highest
150m
Power Reserve
42h
42h
MSRP
$1,768
$665
lowest
Movement
Soprod M100
Miyota 9039
Case
7 specsCrystal & Dial
3 specsMovement
4 specsPricing
1 specsReviews
Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.
Owners widely praise the Serica Ref. 5303 Diving Chronometer for its excellent wearability, unique style, and smooth, confident bezel action with a useful dual scale. The winding, hacking, and crown action are reported to be working perfectly, and timekeeping is consistently good, with one owner noting it kept good time over eight months. Some owners find the crown to be comically large, though this is a minority view. Overall, owners rate the Serica Ref. 5303 Diving Chronometer highly for its wearability and distinctive design.
The Traska Seafarer Charcoal is widely praised for its exceptional value, comfortable bracelet with on-the-fly adjustment, and durable construction featuring a proprietary scratch-resistant coating. Owners appreciate its attractive, versatile design and retro aesthetic, with many finding it a perfect daily wearer or beater watch that looks even better in person. Some owners report issues with rotor problems or misalignment, and one user found the 12 o'clock indices crooked. The strap is noted by one owner as feeling cheap, and the 150m water resistance is considered low by one owner for an internal bezel watch. Overall, owners and reviewers rate the Traska Seafarer Charcoal highly for its impressive specifications and build quality at its price point.
The Traska Seafarer Charcoal's notable strength is its refined finishing, which elevates it from a field watch to a luxury-like piece. A shared weakness is the dim lume, which may be a drawback for those who value nighttime visibility. Reviewers disagree on the watch's build, with one reviewer noting a more substantial build and larger case size, while the other does not mention this feature.
Similar watches
Matched to the watches above on size, movement, style and price, microbrands first. Open any one to dig in.
Also compared
Comparisons nearby in the catalog: alternatives to the watches above paired against the matchup.








