... speaker ,Alarm clock ,cb radio ,music angel speaker, speaker box ,computer sperker,laptop sperker,radio speaker, amplifier sperker,sperker,multimedia sperker ... hour ,you can also shut it down by pressing the key .3. LED display ,3 level brightness : high, medium, shut ... shut off and enter into Province electricity mode ,press any key resumed display .7. Double power supply Special : Radio control ...