Summary: The primary problem with these headsets is that they are NOT "IDEAL for use with all MP3, iPad, iPod, iPhone, miCoach, CD players, mobile phones (3.5mm) and AV systems installed in gyms" as the product page claims. The inline mic and remote only function on apple products. This is fine, just don't claim that the product is ideal for use in smartphones.
Summary: I love it. This perfect for my workout. It is best in sound, Mid and high tone balanced very well by sennheiser, that it deserves no less than 5 stars and at this price it deserves more than five. It is very comfortable in ear too and very good in noise ilustration. Many thanks to Infibeam for delivering it just in 4 days.