Brand | Xiaomi |
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Xiaomi Mi band 2 smart wristband has ADI photoelectric heart rate sensor, 0.42 inch OLED display, touch button, passometer, fitness tracker, sleep tracker, message reminder, call reminder, water resistant IP67, 20-day standby power, sleep-cycle smart alarm, dialog II 4.0 bluetooth chip, ADI sensor, running MIUI android 4.4 and above versions, ios 7.0 and above, stylish band options including wrap-around and leather, wrist strap length 235mm, adjustable wrist strap length 155mm ~ 210mm, requires bluetooth 4.0.