The sound is really good considering these aren't super pricey earbuds. They are fairly comfortable to wear throughout the day. I have not tried to wear them while working out or running / jogging yet but it seems like they'd feel ok. Battery life has been good. I charged them the first day I got them and have used them for about 6-7 hours over the past week for calls and music and haven't had to charge them yet. They are a little awkward to store away in my backpack or purse as the main piece that sits around your neck is a little bit stiff. I feel afraid of breaking them if I just toss them in my backpack with all my other junk. So far, no breaking though. They seem sturdy.