ION Block Rocker Bluetooth Portable Speaker System Amplifies sound from smartphones, tablets, and more Streams music without wires over Bluetooth Perfect for parties, drive-in movies, and outdoor entertaining Easy Pair links your NFC-enabled smartphone via Bluetooth with a simple tap Built-in rechargeable battery provides up to 75 hours of use Integrated powerbank with two USB ports for quickly charging smartphones and tablets Free Block Rocker app lets you adjust EQ settings and more Digital AM/FM radio and telescoping antenna Input for a microphone, instruments, and other audio sources 1/8-inch (3.5mm) auxiliary input for non-Bluetooth audio sources Recessed wheels and telescoping handle for portability Rugged design to withstand heavy use