Xiaomi mi band 4 full review
This video is about mi band 4 full review of the specs especailly. consisting of different options like workout menu, notifications, heart rate, etc. a small demo of water resistance and also connectivity with MI Fit app.
Also check these for more info...
Mi Band 4 Unboxing video
• Xiaomi Mi Band 4 Unboxing
Huawei Band 4 vs Xiaomi Band 4.
• Xiaomi Mi Band 4 vs Huawei Band 4.