I love the on/off button switch. It was super easy to work (i didn't even read the instructions). I'm not crazy of the "build" of the machine (i wish the usb port to connect my chager was angled differently or the "head" would tilt) but it does what's it's supposed to do and now i can listen to all of my music from my phone. I can hear people ok when i make calls, but i've been told it's hard to hear me. Not sure if thats the product, where i'm located or user error (again...didn't read the instructions) but i really wanted it to listen to music...so i'm happy with it.