Wireless connection, frees you from twisted or kinked cable. Up to 10 meters operation range, no need to worry about the disconnection while you are on a move.Music card support: This headset is like a MP3 player. You can insert the music card in the headset and listen to all the music you want.If the headset runs out of power or you have to connect it to a device with no Bluetooth connection, you can connect them with a 3.5 mm audio cable. This is a very convenient and thoughtful design. Order it online from Jamboshop today and have it delivered straight to your doorstep.