Looks wise ordinary local sunglass. It's not scratch proof. After two week use it got scratches. Very light weight. Property not fit in your face. If you use this glass without helmate while driving very much chances to loss it. Overall this glass gives you a local 150-200 wala feel. One positive feel it will give you comfortable on direct sunlight. Polarisation is good actually you can feel. MI need to work on looks and fitting.
Really amazed with the quality, never expected , I have Ray-Ban and don't see any difference . Xiaomi really understands the needs of Indian customers. It's polarized and build quality is too good for the price. Love it.