... is mainly used in office, hospital, lighting keyboardThis EL keyboard consists four parts of silica gel, film switch, luminescent sheet ... :various colour.-material:silica gel.-power: directly connected to laptop or computer.-specification:85 key board, 109 key board.- ... dustproof, acidproof, alkaliproof, thin(0.86cm), etc.-usage: in laptop or computer.-packing: 1pcs/color box20pcs/CTN/38.5X32.5X42CMNW ...