There are lots of good choices out there, Doug, and it really comes down to how many features you want and what you’re willing to pay.
Basic monitors, like Polar’s FT7 ($110) go for around $100. The FT7 tells you your heart rate, helps you stay in your target zone, and takes a stab at estimating how many you've calories burned. It also has standard watch features—time of day, alarm, date—and it’s water-resistant to an impressive 50 meters. You could easily use the FT7 while running, hiking, and biking.
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