IXDAO 5305 Retro Professional Dive WatchvsSeiko 5 Sports SKX series
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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.

5305 Retro Professional Dive Watch

5 Sports SKX series
Diameter
39mm
38mm
Lug-to-Lug
48mm
44.2mm
lowest
Thickness
12.2mm
12.1mm
lowest
Water Resistance
200m
highest
100m
Power Reserve
n/a
41h
MSRP
$218
lowest
$350
Movement
PT5000
Seiko 4R36
Case
5 specsCrystal & Dial
3 specsMovement
3 specsPricing
1 specsReviews
Synthesized for each watch independently from owner discussions, enthusiast forums, written reviews, and video reviewers.
Owners widely report the IXDAO 5305 Retro Professional Dive Watch offers excellent lume and wears exceptionally well, with one owner noting accuracy at -1 second per day. Some users flag potential inconsistencies in finishing compared to established brands, and one owner mentions sharp edges on the bottom mid-case and lugs. The stock bracelet is considered very heavy, though an aftermarket bracelet can improve wearability. The IXDAO 5305 Retro Professional Dive Watch is seen as decent for its price, with some noting good specifications. Overall, owners rate the IXDAO 5305 Retro Professional Dive Watch highly for its wearability and lume at the price.
The Seiko 5 Sports SKX series is widely praised as an excellent value gateway watch, with owners and reviewers highlighting its solid build and powerful lume. The 22mm bracelet is noted for its comfort, and the watch offers numerous style options. Some owners find the original SKX models heavy and bulky, while others appreciate their ruggedness and iconic dive watch design. The Seiko 5 Sports SKX series offers an upgraded movement with hacking and hand-winding, and standard spring bars for easier strap changes. However, it lacks the screw-down crown and ISO certification of the original SKX, leading some to consider it less of a tool watch. On balance, owners and reviewers rate the Seiko 5 Sports SKX series highly for its value and modern features, despite some preferring the tool watch capabilities of its predecessor.
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