Digital Wireless-Bluetooth Speaker /USB FM Radio with SD Card slot enables you to enjoy many features on the same device. You can also answer phone calls using the wireless speaker to listen the person calling on the other end clearly and enjoy the conversations. It is also ideal for playing music or any audio content you would like to listen to for, example, you can listen to: audio books, audio Bible, sermons or your best comedy audio shows . You can also adjust the volume from the phone to suit the sound you want to hear. The ROBOT wireless speaker has the following features: HD player: built-in digital decoder chip, can read TF / SD card / U disk; can play MP3 files Super radio: built-in FM radio module automatically search and store radio stations, can store up to 50 stations. Compatible with a variety of Bluetooth devices Bluetooth 4.0 + EDR technology Connection.