Fitbit’s efforts in sleep make the Charge 3, which has an SpO2 sensor that could potentially ... screen can be tough to see in the morning light, even without a direct glare.

The real upgrades are found in the Charge 3’s hardware. The Fitbit Charge 3 retains Fitbit’s PurePulse heart rate sensor ... limit that’s come to light in recent weeks.

Fitbit claimed the PurePulse heart rate sensor on the Charge 3 has been “enhanced” for ... out your total time awake and time in REM, light, and deep sleep. It also gives you a 30-day sleep ...

The Charge 3's also Fitbit's first fitness tracker with an SpO2 sensor (same one as on the Fitbit ... sleep composition (i.e. light, deep, REM), and revitalization (heart rate levels and breathing ...

The tracker feels light ... easy to control on the device. Fitbit added the SpO2 monitor (which is used for tracking blood oxygen level) to the Charge 3. The sensor expands the sleep tracking ...

It just announced its newest device: the Fitbit Charge 3. At first glance ... which includes an SpO2 sensor to measure oxygen saturation. (Since this is a consumer device, it isn’t a substitute ...

The Fitbit Charge 3 and the Versa are almost identical when it comes to specs. Each one includes a 3-axis accelerometer, altimeter, optical heart rate sensor ... at a traffic light during a ...

The Fitbit Charge 5 is a slightly chunkier fitness tracker than the Inspire 3. Whereas the Inspire series is a set of super slim and light trackers ... The Charge 5 EDA sensor uses the same ...

3-axis accelerometer, gyroscope, ambient light sensor, skin temperature sensor, barometer, magnetometer This is one particular area the Fitbit Charge 6 shines, especially when compared to the ...

The Charge 3 takes everything that made the Charge 2 great and adds more: a swimproof design, more battery life, a better UI and smarter notifications. It also packs Fitbit’s new SpO2 sensor ...