Amazon.com offers Polar M400 GPS Smart Sports Watch With Heart Rate Monitor for $101.23.
GPS WATCH: Built-in GPS technology keeps track of your pace, distance and altitude.
FITNESS TRACKER: Tracks your workouts, steps, distance, calories burned, sleep quality, and activity 24/8.
WATERPROOF FITNESS TRAINER: Use the fitness tracking watch to keep an eye on your running cadence to improve your running efficiency and avoid injuries in all weather conditions.
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