Sennheiser cx275s earbuds are best earbuds.this is the balanced earbuds with nice bass and truble.every sound you can hear. In some earbuds you feel that sound comes from your earbuds.but in sennheiser cxs275s you will feel that you are not hearing from earbuds but sound comes from natural way.these earbuds are great with mic also. So you can take a call also.i most of earbuds you can’t listen music more than 30-40 minutes. But sennhieser cx275s music is so soft to ears you can listen them many hours continuesly you ear will never feel any trouble.so you can buy them without any confusion.they will be perfect for you.but before buy ensure that you are buying a genuine product.buy it from a reputed website or a store.