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Casio Protrek PRT-1 1840 GPS Watch mint with box and quick reference manual | #1773451964
Casio 卡西欧 Casio (カシオ) CASIO PROTREK PRT-B70BE-1JR PRT-B70BE-1 for $367 for sale from a Seller on Chrono24
Watch Review: Casio Pro Trek PRT-B50 Black Titanium | aBlogtoWatch
Joyee on Twitter: "Check out Casio Protrek PRT-1 The First GPS Watch with New Battery & Manual Vintage #Casio https://t.co/myCJSuDBxV https://t.co/hm1biLP9lc" / Twitter
Casio PROTREK PRT-1 Model 1840 from ca 1999 | WatchUSeek Watch Forums