The Charge 5 housing is made of aluminum, glass and resin. The band is made of silicone and has an aluminum buckle.
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:
Syncing range: Up to 30ft
Optical heart rate monitor
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.
Like all heart rate tracking technologies, accuracy is affected by physiology, location of device and different movements.
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.
Small - Fits wrists 5.1" - 6.7" in circumference
Large - Fits wrists 6.7" - 8.3" in circumference
Keep track of your heart health with a compatible ECG app that assesses your heart for atrial fibrillation - a heart rhythm irregularity - and share the results with your doctor.
Use the on-wrist EDA Scan app to detect electrodermal activity - tiny changes in your skin's sweat level which may indicate your body's response to stress.
Get a daily score showing your body's physical response to stress. You can see how your exercise routine, mindfulness practice and sleep help to manage your stress levels.
Track SpO2 - the level of oxygen in your blood - to help you learn when there may be an indication of important changes in your overall wellness.
Easily log your mood in the app from Very Stressed to Very Calm and observe changes over time.
Do what's best for your body with a Daily Readiness Score that shows whether you're ready to work out or should prioritize recovery.
Get the results you want from every workout. Active Zone Minutes uses your heart rate to guide you toward your desired intensity level.
Track calorie burn and optimize workouts with PurePulse continuous heart rate tracking, then see your resting heart rate trends and cardio fitness level in the Fitbit app
See your real-time pace & distance without your phone using built-in GPS during outdoor activity, then see a map of your workout route in the Fitbit app.
Track your skin temperature variation each night so you can be aware of potential signs of changes in your body like fever or ovulation.
Track all your moves for up to 7 days without having to stop for a charge with a long battery life.
Bring your stats to life on a new color touchscreen that's two times brighter than Charge 4 in daylight and protected by Corning Gorilla Glass 3.