Finally, the Mi Band 4 and Inspire HR are both great sleep trackers. They’ll track your light and deep sleep, as well as your overall time awake throughout the night. The Inspire HR will also ...

Mi Band 4: Mi Band 5: Screen size: 0.95-inch 1.1-inch Screen resolution: 120 x 240, 400nit 126 x 294, 450nit Water resistance: 50 meters 50 meters ...

The Mi Band 4 also offers built-in sleep tracking, and the results are…interesting. This is partly because I have an unusual sleep schedule — I usually don't sleep at night — and the Mi Band ...

Xiaomi's Mi Band 4 offers unbeatable value. Skip to main content. Open menu Close menu. ... Unlike more premium devices, it doesn't provide REM sleep details, ...

Sleep tracking is also present, and has been improved with the addition of REM ... or whether both versions will be available. But given that the Xiaomi Mi Band 4 is just $39.99/£34. ...

The Mi Band 4 is an inexpensive fitness tracker that’s packed with features. But if you’re hoping that it will help improve your health habits, this might not be the device for you.