... electricity 50~70%,Free fault rate 2) graphic replaceable LED BoxSuper thin,high brightness,long lifetime for 20000 hoursSaving electricity ... max size:3.1x1.6mVoltage: DC12VMirror and Advertising react swift.Frame material: Acrylic, aluminium alloy, stainless steel, wood can be ... optedApplication:Bar, Supermarket, Metro, Hotel, Bank, ect. aluminium alloy led billboard frame with blink flashing signs