8 High Efficiency Woofer Built-In Bluetooth® Receiver Allows You to Wirelessly Connect to your iPad®, iPhone®, iPod®, Smartphone & More USB/Micro SD & AUX Inputs Allow You to Connect Your Non-Bluetooth® External Audio Devices FM Radio Rechargeable Lithium Battery (3.7V/1800mAh) Volume/Mic Volume/Echo Gain Controls 1 Mic Input (1 mic included) AC Power Supply: 110-240V DC Power: 5V Remote Control Included