Features:Support USB stick, TF, Micro SD cardBarrier-free remote control for 10000mWidely used for Hunting, teaching, meeting, tour guide, etcCome with convenient bag for storage and carry the amplifier easilyIf used as decoy for hunting birds, you need to download the bird calls in MP3 formatUp to 64G capacity U disk to play songs, songs support MP3/WMA high fidelity formatPackage Included:1 x Voice Amplifier1 x Charger1 x Remote Control(battery included)1 x Mini Bag1 x Lanyard1 x English Manual