This will make road trips so much more convenient, as she can be in her own world with or it?s out the connection to her Apple Music. They have a 0. Purchased these led bars to place on the handlebars of an ATV, and snowmobile. I did find the plastic stoppers to hold the height a little loose. Bought these for my wife who is an ER nurse. I love these teva?s. It is made very well, quality material and washes up nicely. Space saver and works well, but a little pricey. Initially I named (and colored the buttons) differently so I knew which was which when pairing. By the second day I could wear it for 6 hours no problem.