Each XS Wireless Digital transmitter and receiver have only one button. Press to power up and link simultaneously, click once to mute, and hold to power down. What’s more, they each feature a single LED that indicates when your connection is secure or when it’s time to charge the battery. There are no menus to fuss with or settings to worry about. It’s almost as easy as plugging a mic directing into your camera, only now with a lot more flexibility.