The USB is great when you need to put a flash drive or charge your headset in the middle of a meeting (because youre to lazy do to it before). Reasonable headset, does the job. I only gave it 4 stars because I am not the intended end customer. Very comfortable, very lightweight, and excellent for running. I will not recommend to others to buy it. It looks nice, but in reality, its terrible I live in a small apartment so, it works wonders for organizing my spices ❤️❤️❤️ The top of mine isnt 100% straight but unless you really look you cant notice it. Da dröhnt, klappert, surrt und schnurrt nichts, nichts ist überzeichnet, der Sound ist einfach nur sauber und klar. If I was wearing it sooner, o definitely would have kept it.