The reviews for these were not the highest, so I steered elsewhere. Looks good but its not a sturdy product. The fit isnt too snug so we dont have to worry aboutcirculation problems, or cutting into swollen feet by end of day. I can charge them using the cord by the computer usb hub, and the battery life is quite good. But instead JBL used a more powerful single driver. Looks like it came with the dress. dont buy those cheap knockoff akg dat cost 12 dollars or less. A 4 seems a little high tbh. 40 return, so double check you’ve ordered the correct size, I’m still waiting for my refund. Connected easily to my phone.