Essential for DJ musicians and professional audio professionals! High-efficiency 15 “woofers Built-in BT receiver allows you to connect wirelessly to your iPad iPhone iPod Smartphone and more USB / Micro SD and AUX inputs Let you connect your external non-BT audio devices. FM Radio. True Wireless Speaker: Main Speaker and Sub Speaker Connect Via Bluetooth® to Synchronize and Play Together (No Wires Needed).1 Mic Input. 1 Microphone& remote included .