MLK-328 FM WIRELESS TRANSMISSION FUNCTION,SUPPORT FREQUENCIES OF87.7MHZ--88.9MHZ,106.7MHZ--107.9MHZ USB HIGH-SPEED DOWNLOSD SUPPORT MOST OF THE FLASHES AND USB HARD DISKS. SUPPORT FAT12/FAT16/FAT32 FORMAT AUTOMATICALLY SCAN MP3,SUPPORT MAXIMUM FIVE LAYERA OF FILE DIRECTORY. FIVE FUNCTION KEYS ARE:PLAY/PAUSE/PREVIOUS/NEXT/FREQUENCY ADJUSTMENT/RESET STEREO LINE IN INPUT JACK; INPUT VOL:+12V/24V LCD INDICATION:RADIO FREQUENCY,SONG,LYRIC ET. PRODUCT DIMENSION:145*49*19MM PRODUCT WEIGHT:0.058KG ACCESSORY:ANTENNA,AUDIO INPUT CABLE