Easy to install. Simply remove your old shower head and replace. To use, just dock your speaker securely into place. The magnetic speaker pops in and out of the shower head for easy recharging of the built-in lithium-ion battery. A USB cable is included. Wireless speaker can be used outside the shower space, independent of the showerhead. Enhanced noise reduction, Push the speak button to answer calls. Syncs with Bluetooth-enabled devices including smart phones, MP3 players, tablets and laptops located up to 33 feet away. Enjoy an ultra-wide & powerful drenching rain shower while listening to your favorite music.