Xiaomi Mi Band 4 - UNBOXING & 5 Day REVIEW! This video is my official unboxing and full review after 5 days use with the Global / international / English version of the Xiaomi Mi Band smart band / smart bracelet / smartwatch! So the launch / release date is upon us! So for the price are the design and specs good enough? One of the best / top budget / cheap smart bands 2019? Let me know your early thoughts!