I'm using several Bluetooth products at home while working out, and they tend to fall out of my ears every time, which is very uncomfortable. I found them while I was looking for earphones that won't fall off while exercising, and after ordering them, I tried them. The sound quality was definitely lower, but they were okay for listening to while exercising, and they didn't interfere at all while running. It was good. After using it for a couple of times, my left earphone stopped working, so I talked to the seller several times, but in the end, they resolved the issue quickly and kindly.