... display with adjustable brightness. Name :radioKey words : FM radio ,Mini speaker ,Alarm clock ,cb radio Function :1. Normal display with time ... .3. LED display ,3 level brightness : high, medium, shut 4. Speaker used in MP3,MP4,mobile,PC ect . 5. FM radio ... display .7. Double power supply Special : Radio control clock , mini speaker Accessories: aux-in cable and USB recharging ...