I have been using Sennheiser CX 180 earphones for over six months now with my MI 4I phones. Being an ardent music lover, I purchased this awesome product after reading a lot of reviews on it in different web portals.
The price of this product is MRP 990/- with some eCommerce sites offering it a discounted price. It is a German company product and comes with a two year warranty. I got it at the full MRP price at a Reliance Digital outlet near my house at Attapur, Hyderabad. I have not been disappointed with the quality of its performance. It is simply an amazing sound output device. It works well with any audio device which has a 3.5 mm earphone facility.
The quality of music from this earphone is excellent, good bass, good balance of all bass, treble, and highs, mids and lows. It is too good and it will certainly satisfy you for its worth.
It is a purely music set of earphones, and does not have a built in mic in it, though you can hear the calls from it and you can use the mic of the phone for speaking in.
It is the best earphones you can get for a budget of less than Rs 1000/-. The two year warranty is an added assurance of its quality and Sennheiser assures to replace it with no questions asked during the warranty period except for reasons of physical damage due to mishandling.
Go for it if you are looking for a good pair of earphones for the purpose of listening to music of good quality. You will not regret it.