About the product
- Run, bike, hike and more phone-free and see your real-time pace & distance with built-in GPS. Then check out your workout intensity map in the Fitbit app
- Active Zone Minutes uses your resting heart rate to gauge exercise effort and gives you a buzz when you step up the intensity so you can make the most of your workouts.Maximum operating altitude: 28,000 ft
- Better track heart rate 24x7 with PurePulse 2.0, Fitbits enhanced heart rate technology. Operating temperature: -4
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