Xiaomi Mi Sensible Band 4 fitness armband, heart rate monitor, 135 mAh, color screen, Bluetooth 5.0 (2019), black.
Full Colour – AMOLED – touch – Show: View call, text and app – Notifications
Activity and floats tracking Water-resistant As much as 50m, 3 – axis – accelerometers 3 – axis – gyroscope
As much as 20 days Battery: A single charge lasts As much as 20 days.
Health monitoring: 24/7 monitoring of heart rate and sleeping – tracking.
Don’t disturb – mode (also works with out telephone), sound keep an eye on on tape