Mi band 2 has a plus point is oled display over mi band because mi band only have 3 lightning sensors which is quite not comfortable as a band but now in mi band 2 oled feature is pretty good.the pedometer sensor works very aqurately.in the 2000 range mi band 2 is very decent product for a worker and also the band is made up of silicon and other material which is not harmful for sensible skin and you also use it rough and tough.it is a very strong competeter in 2000 band segment because of its feature is awesome.heart rate sensor also introduced in the mi band 2.which plays a vital role in daily life.The app for mi band 2 is mi fit which is avilable in ios and android also. The UI of the app is nice and user friendly.In my opinion mi band is worth buying guys.