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Measure the intensity of your
exercise in real time

Heart Rate Measurement Functionality

GPS + Color Map Display


Powered by Wear OS by Google, WSD-F21HR comes equipped with a variety of features ideal for adventure, including GPS, Location Memory, Moment Setter, and more. Packed with Casio’s Triple Sensor technology, dual-layer LCD and water resistance, PRO TREK Smart is the rugged, stylish and versatile timepiece to enhance any outdoor experience.

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