Specifications

Sensors & Components

Optical heart rate monitor

3-axis accelerometer

Built-in GPS + GLONASS

Red and infrared sensors for oxygen saturation (SpO2) monitoring

Device temperature sensor (skin temperature variation available in the Fitbit app)

Vibration motor

Ambient light sensor

Radio transceiver: Bluetooth

NFC

Multipurpose electrical sensors compatible with ECG app & EDA Scan app

Battery & Power

Battery life of up to 7 days. The use of the always-on display and SpO2 features will require more frequent charging. We recommend charging your tracker every few days to ensure you are always tracking.

Battery type: Lithium-polymer

Charge time (0-100%): Two hours

Memory

Saves 7 days of detailed motion data, minute by minute

Saves daily totals for the last 30 days

Stores heart rate data at 1-second intervals during exercise tracking and at 5-second intervals all other times

Water Resistance

Water-resistant to 50 meters. After 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.

Care

Give your wrist a rest by taking the band off every now and then. If the band gets wet or you sweat in it, remove and completely dry the band before putting it back on.

Materials

The Charge 5 housing is made of aluminum, glass, and resin. The band is made of silicone and has an aluminum buckle.

Heart Rate

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

Environmental Requirements

Operating temperature: 14° to 113°F

Maximum operating altitude: 28,000ft

Syncing

The Fitbit app is compatible with most popular phones. To set up and use your Fitbit products and services, you must install the Fitbit app on a compatible device running one of the following operating systems:

Apple iOS 12.2 or higher.

Android OS 8.0 or higher.

Syncing range: Up to 30ft

Certain features like smartphone notifications may require Android 8.0+.

Syncing requires Bluetooth® LE and an internet connection.

Syncs with Mac OS X 12.2 and up, iPhone 5S and later, Android 8.0 and later.

Band Size

Print guide to finding the right size for you. Both small and large sizes are included in the box.

Small: Fits wrist 5.1" - 6.7" in circumference

Large: Fits wrist 6.7" - 8.3" in circumference

Window Size

Viewing Area: 1.04" diagonal

Screen height: 0.86"

Screen width 0.58"