Hey there many of you are confused between MiBand 5 and MiBand 4 and just thinking which one to consider then u have come to the right place . Here you can really differentiate between MiBand 5 and MiBand 4 , i just want to tell u all that there is not a lot difference between MiBand 5 and MiBand 4 , just a bit difference is there , I am not going to explain u the full comparison just i will tell u the maon difference , the difference is screen size in miband 5 it is 1.1 inch on mi band 4 it is 0.95 inch and the another big update is the spo2 feature and the magnetic charging and the rest is same as mi band 4 , so u can conclude from the above main difference that if you are using the MiBand 4 then u may not need to upgrade to mi band 5 , but u want to purchase between MiBand 4 and MiBand 5 then i will surely recommend u the mi band 5 . If u sill want more info go the video link below Video Link - Mi band 5 vs mi band 4