SpecStudio
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Casio STR-300
Ref. STR-300 · Sport
$46Stock unknown
Case
- Diameter
- 35.2mm
- Thickness
- 12.1mm
- Lug-to-lug
- 48.2mm
- Material
- Resin
- Water resistance
- 50m
Crystal & dial
- Crystal
- Acrylic
- Dial colour
- Black
Movement
- Type
- Solar
Design language
- Case shape
- round
- Dial style
- digital
- Bezel
- fixed
- Bracelet
- rubber
- Hands
- null
AI-detected from the product image
Casio collection · 40 watches
3 colorways
The market
Market prices.
Retail$46
eBay listings
- CASIO PHYS STR-300 Lap Memory 60 Running Watch Digital WatchPre-owned - Good · JP$65
- CASIO Quartz Te Yushi Metalsho Watch Str-300 UsedPre-owned - Good · JP$68
- , No Box. Casio STR-300J-4JF PHYS Quartz Pink Watch For Men And WomenPre-owned - Good · JP$103
Lowest displayed prices first.
Matched listings from our latest checks; eBay may show additional results. We may earn a commission through these links at no extra cost to you.
Retail stock & market context
Casio on the secondhand market
+10.4%
2026 so far · +0.4% to +22.3% · 46 matched watches
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In a nutshell
The Casio STR-300 (ref. STR-300) is a solar sport watch, with a 35.2mm resin case, 12.1mm thick. Water resistance is rated to 50m, under a acrylic crystal. Manufacturer MSRP is $46.
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