Specification of Fitbit Charge 2 Fitness Band
Large – Fits wrists 6.7″ – 8.1″ in circumference
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.
Like all heart rate tracking technologies, accuracy is affected by physiology, location of device, and different movements.
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
Optical heart rate tracker
Fitbit Charge 2 is sweat, rain and splash proof. However, the device is not swim proof or shower proof. With any wearable device, it’s best for your skin if the band stays dry and clean.
We recommend charging your Surge every few days to ensure you are 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
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+.
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
In the Box
Fitbit Charge 2 tracker
Charge 2 classic wristband