Trolley Type PA Personal DJ System is also known as Rechargeable Portable Amplifier 15" Multimedia Speaker woofer with Remote Controlled 1 Wireless Microphones rendering High Volume & power output of 125 W with an inbuilt speaker & battery, AC/DC operation, high - frequency FM receiver, LED display, USB/AUX functions & Guitar Input. Introducing Audio trolley speakers with Bluetooth, SD Card, USB connectivity, FM Radio features. It is useful for birthday parties, Classrooms, karaoke singing, Clubs & Resorts, Banquet Hall, Religious Places/ Halls and many more indoor/outdoor functions / get to gathers. You can also use Aux cable with any Audio/video device. You can also connect your guitar and wired mic with it. It has up to 3 hours battery backup. You can also charge this speaker with your car 12V battery. You will get 2 wireless microphones free with this speaker. Buy Only from Electrical & Musical Deals seller to avoid duplicate items. Additional Information's: Battery Backup - Up to 3 hrs. Output RMS - 75 RMS Watt Trolley Speakers Wireless Mic - Dual Cordless Mic System, Guitar Input Bluetooth, FM Radio, USB and SD card support. 2 Wireless Microphone Free with this speaker. . Can be connected to any Audio/video device like Mobile / PC / Mp3 Player / DVD. Simply plug & play USB and SD card support. . Power: AC 220 - 240V 50/60Hz. . In the Box: Power Cord, 2 x Wireless Microphone, Remote, Manual. Main Features: Battery Backup - Up to 3 hrs. 2 Wireless Microphone Free with this speaker. Can be connected with any audio/video device like Mobile / PC / Mp3 Player / DVD. Simply plug & play USB and SD card support. Audio Wattage: 125 watts. Compatibility - Bluetooth, AUX, FM Radio, USB and SD card support.