Pyle Pro 500 Watt Outdoor Portable Wireless PA Loud speaker - 8" Subwoofer Sound System with iphone Charge Dock, Rechargeable Battery, FM Radio, USB/SD Reader, Microphone, Remote, Wheels - PWMA890UI PORTABLE / POWERFUL: The professional 500 Watt 8 Subwoofer and 3 Tweeter Sound System provides Full Range Stereo Sound Reproduction perfect for Karaoke, Public Events, DJ Party, Crowd Control and it has a Handle and Rolling Wheels for Portability POWER BANK CHARGE DOCK: The integrated docking station for iPods also acts as a charger and charges your iPod or iPhone while playing your favorite music. FM RADIO AND USB / SD READER: The device is also equipped with FM radio, USB / SD Card Readers and AUX 3.5mm Input cable for connecting external devices. Compatible with MP3 / WMA audio files. MICROPHONE AND GUITAR INPUTS: The product is equipped with 2 Mic Inputs for the Lavalier, Headset, Wireless Dynamic Mics included in the set for instant karaoke fun and Guitar / Instrument Input for public performances or music jam. RECHARGEABLE BATTERY: This box type battery powered heavy duty PA Amplifier Speaker has a 7AH/12V rechargeable battery which makes it convenient and portable. Perfect for personal, commercial, indoor / outdoor use.