Sensors & Components                                                                                                 

3-axis accelerometer

3-axis gyroscope

Optical heart rate monitor

Altimeter

Ambient light sensor

Vibration motor

WiFi antenna (802.11 b/g/n)

GPS

NFC

Display

Touchscreen

Color LCD

Battery and Power

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 Ionic 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 Ionic 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 Ionic classic band is made of a flexible, durable elastomer material similar to that used in many sports watches, and includes an aluminum watch case and 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: 30,000 feet

Syncing & Notifications

Fitbit Ionic syncs automatically and wirelessly to computers and 200+ leading iOS, Android & Windows devices using Bluetooth LE wireless technology.

Syncing range: Up to 30 feet

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 4.4 and later and Windows 10 devices.

Music control via Bluetooth Classic on Android and Windows devices. Music control via Bluetooth LE on iOS devices.