OLED, Altimeter, 3-axis accelerometer, Heart Rate
<b>The power of heart rate on your wrist.</b>
<b>PurePulse™ Heart Rate</b>
Get continuous, automatic, wrist-based heart rate & simplified heart rate zones
<b>Long Battery Life</b>
Lasts longer than competing trackers with a battery life up to 5 days
<b>Workouts + All-Day Activity</b>
Track workouts, heart rate, distance, calories burned, floors climbed, active minutes & steps
<b>Auto Sleep + Alarms</b>
Monitor your sleep automatically & set a silent alarm
<b>Caller ID + Watch</b>
See daily stats & time of day, and get call notifications with compatible devices
<b>Wireless Syncing</b>
Sync stats wirelessly & automatically to leading smartphones and computers
<b>Exercise Tracking</b>
Get real-time run stats & review routes, splits and workout summaries on the app
<b>For better fitness, start with heart.</b>
Let your heart be your guide with Charge HR. Monitor heart rate automatically and continuously right on your wrist to accurately track calorie burn, maintain workout intensity, maximize training and optimize health—all without an uncomfortable chest strap.
<b>For better fitness, start with heart.</b>
Let your heart be your guide with Charge HR. Monitor heart rate automatically and continuously right on your wrist to accurately track calorie burn, maintain workout intensity, maximize training and optimize health—all without an uncomfortable chest strap.