The Garmin Forerunner 235 is a smart watch which can calculate your VO2 Max from its wrist-based heart rate monitor and can predict race times.
Garmin Forerunner 235 review: Fully Featured GPS Run Tracking - Tech Advisor
Stay on pace for your next personal record with Garmin Forerunner 235 Watch. Made with Elevate's wrist heart rate technology, this watch is packed
Garmin Forerunner 235GPS Running Wrist Watch Heart Rate Monitor Marsala Silicone
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