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ProTrek PRT-B50 / 5601 / Step Count, Calorie Calculations & Bluetooth
Casio Pro Trek PRT-B50 Watch Review: Plastic Powerhouse | GearJunkie
FS: Casio ProTrek PRT-B50-1CR (Bluetooth) | WatchUSeek Watch Forums
ProTrek PRT-B50 / 5601 / Step Count, Calorie Calculations & Bluetooth
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ProTrek PRT-B50 and mountain walking motivation
