LED name card,flashing gift,led badge batteries:LR927/CR927 use as normal time one or two years LED :can choose red ,yellow , LED name card,flashing gift,led badgebatteries:LR927/CR927battery:use as normal time one or two yearsLED :can choose red ,yellow ,green,blue.white.etc.backside: batteriesbutton:control by button backside .revolve the button is ok logo available