The Xiaomi Mi Band 5 has a similar design to the Xiaomi Mi Band 4, with an oblong-shaped tracker set into a colorful strap. The screen can reach up to 450 nits of brightness (up from 400 on the Mi Band 4) and like its predecessor, there's a button below the screen, as well as the display itself being a touchscreen. That button primarily functions to wake up the wearable or return to the previous screen. The Xiaomi Mi Band 5 has a 125mAh battery which Xiaomi claims can last for up to 14 days between charges. That's notably less than the 20 days of claimed life for the Mi Band 4, but Xiaomi's previous band really did live up to those claims, so 14 days here is likely. While the Xiaomi Mi Band 5 has some smart features, its focus is definitely fitness. To that end it's water-resistant to depths of 50 meters (so you can take it swimming), it has 11 sport-tracking modes (such as running, cycling, yoga and pool swimming), and it has a heart rate monitor, that can keep tabs on your heart rate 24 hours a day. The Mi Band 5 also has sleep tracking, and unlike its predecessor, it can track how long you spend in REM sleep (as well as light and deep). There's a step tracker too, plus reminders to move when you've been sat still too long, breathing exercises, menstrual cycle tracking, and a PAI (Personal Activity Intelligence) score, which gives you an overall rating for your level of activity across the day - letting you see at a glance whether you've been active enough.