The new Xiaomi Mi Smart Band 6 now with a much bigger fuller 1.56" AMOLED screen, blood oxygen level tracking as well as sleep breathing quality tracking. Mi Band 6 comes with 30 different fitness modes, up from the previous 11 as well as all the usual heart rate monitoring, sleep quality monitoring, step count, ideal alert, stress tracking, deep breathing exercises, female health and cycle tracking. Up to 14 days of battery life, usable on the Mi Wear or Mi Fit app.