... 4.LED display with adjustable brightness. Name :radioKey words : FM radio ,Mini speaker ,Alarm clock ,cb radio Function :1. Normal display with time, 12hr ... when it reach setting time ,the radiowill open itself with the latest channel and automatic shut down off after half ... in MP3,MP4,mobile,PC ect . 5. FM radio frequency LED display1)Frequency display :87.5-108 MHZ2)Both Manual or automatic preset ...