SpecStudio
Click to inspect
Seiko 5 Sports SKX series
$350Stock unknown
Case
- Diameter
- 38mm
- Thickness
- 12.1mm
- Lug-to-lug
- 44.2mm
- Lug width
- 20mm
- Material
- Stainless Steel
- Water resistance
- 100m
Crystal & dial
- Crystal
- Hardlex
- Lume
- LumiBrite on hands and index(es)
Movement
- Caliber
- Seiko 4R36
- Type
- Automatic
- Power reserve
- 41h
- Jewels
- 24
Seiko
Seiko's day-date automatic caliber and the in-house branded version of the NH36 with stricter quality control and finishing. The additional day wheel over the 4R35 adds the day-of-week complication without changing the movement dimensions. Found extensively in the Seiko 5 Sports and Prospex lines, it offers Seiko's proven reliability with the convenience of day-date display at a mainstream price point.
Design language
- Case shape
- round
- Dial style
- matte
- Bezel
- rotating
- Bracelet
- lug-attached
- Hands
- mercedes
AI-detected from the product image
5 Sports SKX series collection · 11 watches
5 colorways
The market
Market prices.
Retail$350
The forum market
See what sellers are asking.
Active listings3Across watch forums
Closed · 90d3Asking-price history
Browse forum listings and their asking prices. Market+ adds medians with their sample sizes and the weekly trend.
Retail stock & market context
Seiko on the secondhand market
+7.9%
2026 so far · +3.5% to +12.7% · 75 matched watches
In line with the index
Divers as a group: +7.1% · 297 matched watches
Year-by-year readings →The connection engine
More like this.
The community take
Owners talk.
The Seiko 5 Sports SKX series is widely praised for its value, robust build, and powerful lume, with owners appreciating its comfortable bracelets and improved movement featuring hacking and hand-winding. Some owners find the original SKX models heavy and bulky, while others praise their ruggedness and iconic dive watch design. Reviewers note the 38mm models offer great value at around €350 and are exemplary gateway watches, though their 100m water resistance without a screw-down crown makes them unsuitable for diving. The Seiko 5 Sports SKX series is seen as a decent watch, especially under £200, but lacks the tool watch capabilities of the original SKX, missing a screw-down crown, bezel pip, and ISO rating. On balance, owners and reviewers rate the Seiko 5 Sports SKX series well for its blend of value, improved movement, and tool-watch aesthetic, despite some missing dive certifications.
Open the discussion
On real wrists · 8
The paper trail
Cross-shops
Popular comparisons.
The matchups people make with the Seiko 5 Sports SKX series most — open one to see it side by side.
The discussion