ER3048B Features With LED screen， display the number  Supports TF card reader and USB flash drive Features 4 loop modes  Switch the folder by remote directly Memorize the last played frequency， song and volume General Specs Brand & Model T702D Frequency 87.5MHz-108.0MHz Voltage 12V Loop Modes 4 Package Details Weight: 65.27 g Size: 16.5*10*4 cm