the right earphone went out during the first time of me using them just now. I would not pay $300 but these are worth it if the price point is under $200 I recommend go up 2 sizes if you feet is wide and 1 size if your feet is slim. They are comfortable in the ear - they fit well - and the comfortable fit lets you know which ear is right and which is left. Battery life is not that great, around 3 hours in one go The 2? and 4? are perfect though, even with our heaviest backpacks. My daughter also likes to use these headphones with the auxiliary cable to connect straight to her phone. The device was in very good condition on the outside and sounded fine. These are really comfortable because they use soft silicone for the parts. I?m glad I got them refurbished at a lower price.