Skip to main content
  1. Home
  2. Wearables
  3. Health & Fitness
  4. Mobile
  5. News

The Fitbit Charge 4 has leaked online and it’s almost identical to the Charge 3

Add as a preferred source on Google

It looks like Fitbit is preparing to launch its next generation of fitness trackers. Images of what looks to be the Fitbit Charge 4 have leaked online in a report from 9to5Google, and come courtesy of a “trusted source.”

The images show that the new device will be almost identical in design to the Fitbit Charge 3, with a grayscale OLED display and a single button on the left side of the display. However, the display in the leaked images shows a new watch face featuring larger numbers for the time, date, and activity statistics. On the back of the device is an optical heart rate monitor along with an SpO2 sensor, which measures the oxygen saturation of the blood.

Image used with permission by copyright holder

There are other features on offer too. The report notes that the device’s band can be switched out with a click, and accessories that were compatible with the Charge 3 may also be compatible with the Charge 4, given their almost identical design.

Recommended Videos

It may offer software updates too. The Fitbit Versa 2 offers an always-on display, unlike the original Versa — and it’s possible Fitbit will make a similar upgrade for the Charge series. Currently, to turn on the display of the Charge 3, you have to raise your arm, squeeze the device, or tap the display. The device may also offer NFC support, which will allow users to make mobile payments using their fitness tracker.

According to the 9to5Google report, the device will be available in a number of different color schemes — including black, rosewood, and storm blue/black, as well as a granite special-edition model. The report notes that the device will come at £139 in the U.K., which equates to around $160. Manufacturers often price devices at similar numbers in different countries, so it’s possible the Fitbit Charge 4 will come in at closer to $140 to $150 in the U.S.

Fitbit itself is in for some major changes over the next few months. Google announced its intention to acquire Fitbit in November, and the deal is subject to regulatory approval. Until that deal goes through, however, it’s likely Fitbit will stick to its current product road map.

It’s not yet known exactly when the Fitbit Charge 4 will be released to the public, however it’s entirely possible that the launch will be delayed due to the coronavirus outbreak.

Christian de Looper
Christian de Looper is a long-time freelance writer who has covered every facet of the consumer tech and electric vehicle…
Google’s new Android XR tools let developers test apps without needing to buy expensive smart glasses
Google has also added new Android CLI tools to help AI coding agents test apps and catch performance issues.
Gentle Moster smart glasses powered by Android XR

At the 2026 Android Dev Summit, Google has announced some interesting features coming to both Android XR and Android CLI. Developers can now build and test apps for smart glasses without owning the hardware, while Android's command-line tools are getting upgrades that help AI coding agents test applications and identify performance problems. Both announcements could eventually mean better apps for both Android and extended reality hardware users.

Building Android XR apps without owning smart glasses

Read more
Some Galaxy Watches may be too old for Samsung’s biggest sleep apnea upgrade
Samsung is adding three levels of breathing disturbance data, but the full feature won’t reach every watch that supports basic apnea detection
Body Part, Hand, Person

Samsung is making its Galaxy Watch sleep apnea tracking more useful than a simple warning. The upgraded system estimates how often breathing disturbances occur each hour, then sorts the result into three frequency levels.

There’s a catch for anyone holding onto an older model. Detailed results require Wear OS 7.0 or later, while watches stuck on older software will keep simpler alerts.

Read more
A tiny smart patch could help you get your workout form right
The experimental wearable could help you understand your workout form without relying solely on a trainer's eye.
Actual image of wearable sensor patch along with its electronic module

Not everyone can afford to hire a personal trainer. And let’s be honest, learning exercises from YouTube or the gym regulars isn’t exactly foolproof. We need a solution that is both affordable and accurate.

A research group at the Indian Institute of Technology Gandhinagar (IITGN), led by Dr Biswajit Saha, has a solution. He created a bendy wearable sensor that works in the gym and for sports like tennis and swimming.

Read more