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20mm Black Rubber Watch Band / Strap Compatible For Casio Protrek Prt-10 , Prt-20 , Prt-30 , Prt-40 , Prt-50 , Prt-60 , Prt-70 - Watchbands - AliExpress
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The CASIO PRT-B50 is the first PRO TREK analog watch to have Smartphone Link and 4 environmental sensors - NotebookCheck.net News
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