These bluetooth headphones are amazing. Setting it up to my phone or whatever device I wanted was fast and easy. The earbuds themselfs came with different sizes and the earbuds fit nicely in my ears and no matter what I did, it was hard for them to fall out ( it made my workouts easier because i didnt have to keep fixing/adjusting them). Sound is very clear through the earbud and people on the opposite end of the call can also hear me loud and clear as well. Battery life is as described on the box : 4-5 hour talk time and charging time is fast as well. I am very happy with my purchase!