Mehfil MH-1212 Trolley Speakers Are An Excellent Choice If You Want Heavy Bass And Loud Sound. It Is Available In Big Size And Its Portability Provides Easiness For Outdoor Gatherings And Large Functions. The Wireless Remote Control Offers Full Function For Changing/Adjusting Media And Levels. The Bluetooth Support Feature Can Connect The Speaker With Any Bluetooth Enabled Device. Moreover, You Can Play MP3 Files Directly By Plugging In USB.