A new version is coming! Mi Band 1S, a heart rate wristband - Everyone is worth having. During aerobic exercise, have a good heart rate, it is better to lose weight and improve cardiorespiratory capacity. Mi Band 1S equipped with an optical heart rate sensor, can real-time detect heart rate, let you adjust the motion state scientifically and consume fat efficiently. Mi Band 1S manages your motion every moment and take good care of you. HIGHLIGHTS: Heart rate monitor: 1S with optical heart rate s
