What's Included

• Fitbit Charge 2 tracker
• Charge 2 classic wristband
• Charging cable

Sensors & Components

• Optical heart rate tracker
• 3-axis accelerometer
• Altimeter
• Vibration motor

Display

• OLED

Heart Rate

Like all heart rate tracking technologies, accuracy is affected by physiology, location of device, and different movements.

Battery and Power

We recommend charging your device every few days to ensure that you're always tracking.

Battery life up to 5 days. Battery life and charge cycles vary with use, settings, and other factors; actual results will vary.

• Battery type: Lithium-polymer
• Charge time: One to 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 2 is sweat, rain and splash proof. However, the device is not swim proof or shower proof. With any wearable device, its best for your skin if the band stays dry and clean.

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. Learn more.

Materials

The Fitbit Charge 2 wristband is made of a flexible, durable elastomer material similar to that used in many sports watches. The Charge 2 tracker and buckle are made with surgical-grade stainless steel. The gunmetal Charge 2 features a gunmetal stainless steel buckle and frame made with a premium PVD plating process. The rose gold Charge 2 features a 22k rose gold plated stainless steel buckle and frame also made with a premium PVD plating process.

Environmental Requirements

• Operating temperature: 14 to 113 F
• Maximum operating altitude: 30,000 feet

Syncing & Notifications
Using Bluetooth LE wireless technology, Fitbit Charge 2 sends smartphone notifications and syncs automatically to computers and 200+ mobile devices. Certain features like smartphone notifications or Connected GPS may require Android 5.0+. Look up your device to check compatibility.

• Syncing range: Up to 30 feet
• Syncing requires Bluetooth LE and Internet connection. Windows 10 computers that do not have Bluetooth LE will need a wireless sync dongle in order to sync.
• Syncs with Mac OS X 10.6 and up, iPhone 4S and later, iPad 3 gen. and later, Android 4.4 and later, and Windows 10 devices.