The xiaomi Mi band is worn on the wrist, just like a wristband. Its a fitness tracker band. Its as accurate as any other fitness band and we particularly like its sleep monitoring, Vibration alarm and phone notification.
Mi band also track how much distance you walk in a day and how much calories you burn. Mi band is an excellent value, lightweight ( 5grams) fitness band with outstanding battery life( more than 30) and Fully water proof.