All they really added was a microphone. The pack is extremely well made. The instructions are kinda basic, and mine said you only had to press the button on the dongle to get it to connect, but i had to hold mine down to get it to work. Bad fit, no arch support. And at ?450 its impossible to give them 5 stars for value - not when the much cheaper new HD560S can be had for 1/3rd of the price - now they are a real bargain! A pretty ordinary set of headphones in my opinion and the Microphone quality is "ordinary" at best. Der ?typisch? Neutrale Sound wird zwar mit kleinen Abstrichen angeboten, allerdings greife ich persönlich hierzu eher zu stationären Kopfhörern, die meist gar keine Bluetooth Funktion anbieten. I felt I needed stronger mounting support so zipped over to my friendly hardware megachurch and got what I needed. However, when I first put them on, I could rub my big toe up against the inside tip of the shoe (it was by no means uncomfortable, but a person with a size 8 foot may find the medium to be too small. This is the second pair of these sandals I have bought.