PurePulse™ Heart Rate Gives continuous, automatic, wrist-based heart rate & simplified heart rate zones. Learn more
Workouts + All-Day Activity Track workouts, heart rate, distance, calories burned, floors climbed, active minutes & steps
Exercise Tracking Get real-time run stats & review routes, splits and workout summaries on the app
SmartTrack™ Automatically recognizes select activities and records it in the exercise section of the Fitbit app
Auto Sleep Tracking & Silent Alarms Monitor your sleep automatically & set a silent alarm
Caller ID + Watch See daily stats & time of day, and get call notifications with compatible devices
Wireless Syncing Sync stats wirelessly & automatically to leading smartphones and computers
Battery life: lasts up to 5 days
Battery type: Lithium-polymer
Charge time: One to two hours
Radio transceiver: Bluetooth 4.0
Tracks 7 days of detailed motion data - minute by minute.
Tracks daily totals for past 30 days
Stores heart rate data at 1 second intervals during exercise tracking and at 5 second intervals all other times
Water Resistance Spill proof and Splash proof but Not suitable for Swimming
Wireless sync dongle
Sensors & Components
Optical heart rate monitor
If the band gets wet or if you sweat in it, remove and completely dry the band before putting it back on. Clean the band with a mild soap-free cleanser like Cetaphil or Aquanil. Give your wrist a rest by taking the band off every now and then.Learn more.
Fitbit Charge HR's wristband is made of a flexible, durable elastomer material similar to that used in many sports watches. Fitbit Charge HR also has a surgical-grade stainless steel buckle.
Operating temperature: -4° to 113° F
Maximum operating altitude: 30,000 feet