Connect such sources as a laptop, computer, MP3 player, CD player, DVD player audio, mixer or other Stereo audio devices to the RCA connector. The USB flash drive input can handle a maximum size of 16 GB and play your .MP3 & .wma files from your USB flash drive through this speaker. Forgot your USB flash drive at home? Want to play audio files from your phone while keeping it safe in your pocket? No problem. The BLUET8X’s Bluetooth compatibility allows for wireless connection to any A2DP stereo Bluetooth device. That means you can play audio files from your phone, laptop or any other Bluetooth enabled device within a 30 foot foot range. The BLUET8X gives you the freedom to Stream Music wirelessly from any Bluetooth enabled device. Features: Inputs: USB Flash Drive, / SD Card, RCA Digital FM tuner USB flash drive / SD Card maximum size: 32GB Plays .MP3 files from USB flash drive / SD Card Bluetooth compatibility allows for wireless connection to any A2DP stereo Bluetooth device Features Bluetooth v2.0 with EDR Bluetooth (2.4 GHz) technology Bluetooth Range: 30 Feet Remote Control Frequency Response: 20Hz-20KHz 6 pre-set equalization modes Bass, Treble & Volume Controls MPN – BLUET8X