Just £35 in the UK. And that's a bargain for the tech you're getting
https://www.androidauthority.com/xiaomi-mi-band-4-review-1005722/Each year, Xiaomi adds more features to its Mi Band lineup and keeps the price hikes to a minimum. With an improved display, more exercise profiles, and a rock-bottom price, the Xiaomi Mi Band 4 squares itself away as one of the best cheap fitness trackers of 2019. If you called it the best cheap fitness tracker, I don’t know if I’d argue with you.
If you need a cheap fitness tracker or simply want to upgrade from a previous Mi Band device, you should seriously consider the Xiaomi Mi Band 4.
6 workout modes: Treadmill, exercise, outdoor running,
cycling, walking, pool swimming; Count steps, distance,
and calories burned
Workout completion notifications, goal setting, sleep monitoring,
heart rate monitoring, all-day heart rate checking, resting
heart rate, heart rate chart, idle alerts
Alarm, proximity sensor, pre-set watch face, customizable watch face,
lock screen, timer, stopwatch, phone alarm and notifications, incoming
calls, message notifications, calendar notifications, app notifications,
weather forecast, Find my phone, phone unlock, event notification,
Night mode, Do not disturb mode (works even without phone), music
controls on band, Bluetooth broadcasting, battery level display, different
ways to wear, OTA updates