It is the lowest priced earphone of Mi company.When I purchased my Mi4i, I also bought the earphone because there is no earphone with the phone.I loved the design and I hope you will also.It has basic filters in it and that makes the music soft and there is no buzz.Performance was very good but one day suddenly it left side damaged.It is affordable as It costs Rs.500.It consist of a mic and a button which helps in play and stop of the music.I would rate it 4 star.Hence it has very good features and I was satisfied.