Upgraded full screen display 1.56 full view AMOLED screen, 49% larger area than mi smart band 5. High resolution of 326 PPI, could see picture and text more clearly. Upgraded sports tracking 30 workout modes to record your heart rate and burned calories, including popular exercise like HIIT, Platies, Zumba. Upgraded health monitoring SpO2 tracking can detect your blood oxygen saturation level, which is vital to health. Sleep monitoring that could record REM, all day nap and sleep breathing quality. All day Heart rate monitoring and alerts. Ag+ Antibacterial strap The in-box black TPU strap contains Ag+ antibacterial agent to prevent skin from germs Use longer & charge easier Up to 14 days battery life for normal use. Easily charged with magnetic charging pins Water resistant up to 50m 5ATM water proof level that can be used during swimming. More useful functions Camera control\ Music control\ Idle Alert Stress\PAI\ Menstrual cycle tracking, breath training. Mi Wear/Mi Fit APP Could either use Mi Wear or Mi Fit App to connect with band.