Pros:good battery lifeclear audioCons:heavyflimsy, breaks easilyI had searched the internet many times over looking for a good, lightweight, bluetooth set of headphones. After a lot of reading and hemming and hawing, I finally decided that these were the right ones for me. I was really excited to receive these headphones as a present and used them immediately. At first I was impressed by how easy they were to use. The range was decent and the sound quality good. However, after using them more often and for longer periods of time I realized that they were not as comfortable as I thought. After a while, they felt heavy on the ears and were tiring to wear. They can't be used while running/ brisk walking on the treadmill because the weight makes them slip. Also, the behind-the-head design makes it impossible to lie down while using them. Since they cannot be folded up, they can be difficult to pack, especially because of the flimsy band that connects the headphones. What disappointed me the most was that despite careful use, the band cracked so the headphones became too loose and impossible to wear. Superglue didn't work - after trying to repair them, the band quickly cracked again even before I got to put them on. So, I'm in the market for bluetooth headphones once more. For my next purchase, durability, compactness and an over-the-head design will be top priorities.