A model from PRO TREK equipped with Triple Sensor Ver.3. Altitude measurement interval is 1 second (only for the first 3 minutes), measurement
Casio Men's PRG-270-1 Protrek Triple Sensor Multi-Function Digital Sport Watch
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Casio Men's Pro Trek PRG-270-1 Tough Solar Triple Sensor Multifunction Digital Sport Watch : Clothing, Shoes & Jewelry
Casio Men's Pro Trek PRG-270-1 Tough Solar Triple Sensor Multifunction Digital Sport Watch : Clothing, Shoes & Jewelry
Casio ProTrek PRG270 Multifunction Watch
Casio Pro trek (PRG-270): A quick look and overview
Casio Men's Pro Trek PRG-270-1 Tough Solar Triple Sensor Multifunction Digital Sport Watch : Clothing, Shoes & Jewelry
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Casio Men's Pro Trek PRG-270-1 Tough Solar Triple Sensor Multifunction Digital Sport Watch : Clothing, Shoes & Jewelry
Casio Outdoor Digital Multi-Color Dial Men's Watch-PRG-270-1ADR (SL72) : : Fashion
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Casio Outdoor Digital Multi-Color Dial Men's Watch-PRG-270-1ADR (SL72) : : Fashion