You wanna look super handsome. These things will last 3 or 4 years, if shes lucky. Uses normal micro USB charge port, which keeps charging easy. Easy to install, fun to look at, and have definitely dampened the sound in my room by well over 60%! when i wore with black capris i did a double take to be sure the crocs where not navy. I have very dark hair so would be noticeable. All around don’t buy waste of money. The carbon fiber material is much nicer than rubber or plastic alternatives. Product as described. Ordered the 2XXL based the the companies size chart NOT AMAZONS.