Technical Pro ABS Molded PW1557UBT 15-Inch Two-Way Active Loudspeaker with USB/SD Card Inputs and Bluetooth Compatibility 1300 watts peak power Built-in amplifier Line Inputs: RCA (Unbalanced), XLR (Balanced), USB, SD card USB/SD Card LCD displays USB & SD Card track information such as remaining time and title Includes remote which controls USB, SD Card & Bluetooth Bluetooth (2.4 GHz) technology Bluetooth Range: 30 Feet Separate volume controls for both microphone inputs, line input and USB/SD Card