Skip to main content

Fitbit Charge 4: Everything you need to know

Lifestyle photo of Fitbit Charge 4.
Lifestyle photo of Fitbit Charge 4. (Image credit: Maridav)

Fitbit has released its fourth-generation Charge 4 advanced fitness tracker. Arriving one year after the Fitbit Charge 3, the new-generation model isn't much different than its predecessor. Despite this, there's some vital information you should know about the $150 wearable devices.

Can I use the Charge 4 with my iPhone?

Fitbit's latest wearable device supports iPhone and Android-based devices. It syncs automatically and wirelessly to computers and over 200 leading iOS, Android, and Windows devices using Bluetooth LE wireless technology. For syncing, your mobile device needs to be an iPhone 5S and later, iPad 5 gen. and later, or Android 7.0 and later. With the free Fitbit app, you can see a running history of your steps, distance, calories burned, and active minutes, and your sleeping information.

Does it have Fitbit Pay

Product laydown photography for Fitbit Charge 4.

Product laydown photography for Fitbit Charge 4. (Image credit: Bonfire Labs)

The Fitbit Charge 4 offers Fitbit Pay, which allows you to make purchases without your phone or wallet nearby. The number of banks and transit systems that support Fitbit Pay continues to grow. To date, it's backed by more than 500 banks and 10 transit systems in 44 countries.

Does it include a warranty?

Fitbit offers a limited warranty on all of its products, including the Charge 4. The warranty (opens in new tab) varies depending on where the device is purchased. In the European Economic Area, for example, Fitbit products have a two-year warranty period. In the United States, the products are free "free from defects in materials and workmanship under normal use for a period of one (1) year from the date of purchase."

What workouts does it support?

The Charge 4 supports over 20 goal-based exercise modes like run, bike, swim, yoga, and more. Each allows you to set a goal and get real-time stats during your workouts.

Does it have a heart rate monitor?

The latest Fitbit product offers 24/7 heart rate tracking. It also provides a Cardio Fitness Score that gives you a better understanding of your fitness level and how it has developed over time. You can use this information to change your daily routine for better health. You can also find your personalized fat burn, cardio, and peak heart rate zones to optimize your efforts.

Does it have a blood oxygen monitor?

Product laydown photography for Fitbit Charge 4.

Product laydown photography for Fitbit Charge 4. (Image credit: Bonfire Labs)

With the built-in SpO2 sensor, the Charge 4 provides information that powers Fitbit's Estimated Oxygen Variation Graph in the Fitbit app. In turn, you can see an estimate of your oxygen level variability in your bloodstream, which may indicate variations in your breathing during sleep.

Is it waterproof? Can I wear it while swimming?

Like previous Charge devices, the Fitbit Charge 4 is swim-proof with water resistance up to 50 meters. Because of this, you can wear the tracker in the shower and pool.

Can I play music on it?

The Charge 4 can control Spotify music from your nearby phone. With the functionality, you can navigate between playlists, songs, and albums. A Spotify Premium account is required.

Does it have GPS?

Yes, the Charge 4 includes GPS. This makes it possible for the device to keep track of your real-time pace and distance when you're out and about without your phone. When you get home, you can see a map of your route through the Fitbit app.

Can I make phone calls or text with it?

You cannot make phone calls from the Charge 4, but you will get call and calendar alerts on the device. Receiving text notifications from your phone is also possible. Only Android device owners, however, can send quick replies from the wearable device.

How long does the battery last?

Product laydown photography for Fitbit Charge 4.

Product laydown photography for Fitbit Charge 4. (Image credit: Bonfire Labs)

The battery on the Charge 4 can last up to seven days before it needs to be charged. The actual time varies depending on usage.

How much does it cost?

The Charge 4 is $150 for three of the four launch models. A special edition Granite Reflective Woven version is $170.

When will it be available?

You can pre-order the Charge 4 now with the first orders going out in mid-April 2020.

Bryan M Wolfe
Bryan M Wolfe

Bryan M. Wolfe has written about technology for over a decade on various websites, including TechRadar, AppAdvice, and many more. Before this, he worked in the technology field across different industries, including healthcare and education. He’s currently iMore’s lead on all things Mac and macOS, although he also loves covering iPhone, iPad, and Apple Watch. Bryan enjoys watching his favorite sports teams, traveling, and driving around his teenage daughter to her latest stage show, audition, or school event in his spare time. He also keeps busy walking his black and white cocker spaniel, Izzy, and trying new coffees and liquid grapes.