pairs easy and good Bluetooth connectivity. Bought another set to hang more stuff. At our age, it is not so easy to please a lady. The straps are tight for me even with a 10. - You can change the noise cancelling level (20 levels). Overall, these are great shoes for running, walking or everyday shoes! Bought these for my husband, hes a size 10. Do not recommend buying. Battery life is close to the advertised 20 hours - more than enough for me and with the USB C charging is quick and easy. I really like this cause keeps my chargers organized and hides all the wires.