I have only opened two of the packs (one for indoor use, and one to keep in my truck for outdoor running) and they work well. I refused to buy a rack that holds my bike by the frame in fear of it messing up the carbon frame. Les LED fonctionnent biens et réagissent aux besoins. Really liked it but when you leave it on the car when you drive it makes noise from the wind hitting it. I wish they added an additional piece of plastic on the top to keep the shoe from falling. I mean, it?s gonna be holding up a heft mic for a good amount of time, and I?m more than a little protective of my XLR condenser mic. Great tool for home office meetings. I wanted to have a set that wouldnt attract too much attention in public and that could fit nicely under a scarf or hat, and these are just right for those purposes. that?s a plus. I was a bit skeptical about this product given the affordable price.