Xiaomi is launching the Mi Band 4, the latest generation of its (almost) world-conquering wearables line. The dirt-cheap tracker comes with a bigger, sharper display, microphone and NFC, as well as a new gyroscope. Improved movement tracking means that, for the first time, the band can be used to automatically record your swim laps.
The Mi Band 4 is a no-brainer in terms of value for money. For an average price of $35-40 (depending on where in the world you buy it from), you get an all-day activity, sleep, and workout tracker, plus a few bells and whistles, like a nice AMOLED display, notifications, alarms, timers, and a stopwatch.