Moreover you can use this device as a hands free set for doing telephone conversations. You don’t have to get out of your bad to take phone calls! WAKEBOX BT MT3148 has a integrated FM radio with auto tune feature (87,6-108MHz). The built in speaker with a total RMS output of 10W RMS, gives you clear sound quality. WAKEBOX BT has a built-in rechargeable battery. If fully charged, this device works up to 7 hours! Additional AUX 3,5mm connector gives you the possibility to play your favorite music tracks from almost every device. As a special bonbon our WAKEBOX BT comes out with USB port and a microSD card slot with reader function, so you can play your music files directly from external flash drives.