Overview

Wear Fitbit Charge 3 all day and night to record and reveal your resting heart rate, track heart rate trends over time and follow your progress, Stay connected with call and calendar alerts, text notifications and quick replies, plus notifications from smartphone apps. Available when your phone is nearby, quick replies coming soon to Android only.

Specifications

Sensors & Components	3-axis accelerometer
	Optical heart rate monitor
	Altimeter
	Vibration motor
	Relative SpO2 sensor
	NFC (in special editions only)
Display	Touchscreen
	Grayscale OLED
Battery and Power	Fitbit Charge 3 has a battery life up to 7 days. Battery life and charge cycles vary with use, settings, and other factors; actual results will vary. We recommend charging your tracker every few days to ensure you are always tracking.
	Battery type: Lithium-polymer
	Charge time (0-100%): Two hours
	Radio transceiver: Bluetooth 4.0
Memory	Saves 7 days of detailed motion data – minute by minute
	Saves 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	Fitbit Charge 3 is water resistant to 50 meters. After swimming or getting the band wet, we recommend drying the band because, as with any wearable device, it's best for your skin if the band is clean and dry. We do not recommend wearing Charge 3 in a hot tub or sauna.
Care	If the band gets wet or if you sweat in it, remove and completely dry the band before putting it back on. Give your wrist a rest by taking the band off every now and then.
Materials	The Fitbit Charge 3 classic band is made of a flexible, durable material similar to that used in many sports watches, and includes an aluminum buckle. The woven band is made from a comfortable polyester and includes an aluminum buckle.
Heart Rate	Like all heart rate tracking technologies, accuracy is affected by physiology, location of device, and different movements.
Environmental Requirements	Operating temperature: -4° to 113° F
	Maximum operating altitude: 28,000 feet
Syncing	Fitbit Charge 3 syncs automatically and wirelessly to computers and 200+ leading iOS, Android & Windows devices using Bluetooth LE wireless technology. Windows compatibility coming soon.
	Syncing range: Approx. 20 ft
	Certain features like smartphone notifications may require Android 5.0+.
	Syncing requires Bluetooth LE and Internet connection. Windows 10 computers that do not have Bluetooth LE will need a wireless sync donglein order to sync.
	Syncs with Mac OS X 10.6 and up, iPhone 4S and later, iPad 3 gen. and later, Android 4.3 and later and Windows 10 devices.