Once the blisters healed, I wore them for short periods of time until my feet toughened some. The main purpose is the monitor heart beat with Polar Beat Ap & heart rate strap. I almost sent them back because they werent recording properly and I was getting a great deal of feedback. This is great for a small space but is extremely wobbly because it’s so tall with such a small base. I do not know the bandwidth. + Personally I found them quite comfortable to wear with included tips. I find it hard to believe that this unknown brand has quality that is almost similar to that of an Apple Airpod. Too much for me. I do have a Razer Blade Pro laptop which is the best laptop Ive ever owned (including MacBook Pros) and therefore chose these almost exclusively based on my very positive past experience with Razer products. Two of them are Awesome!