Featuresr work with ios 70 above and android 40 above smartphone and tablets bluetooth 30 or abover you can use the watch to answer call and listen to music without taking out the phone very convenientr you can also see your missed calls dialed calls and received callsr it delivers clear voice transmission and high quality soundr play the music in your phoner the remote notification can query qqwechat instant messagingyou must download the apk smart watchr pedometer calculatio