... of waterproof, dustproof, acidproof, alkaliproof, thin(0.86cm), key-press no voice, easy-curved and puckered, soft light at night ... , internet bar, lab and so on.- name:EL key board.-colour:various colour.-material:silica gel.-power: directly connected ... to laptop or computer.-specification:85 key board, 109 key board.-advantages: water proof, dustproof, acidproof, alkaliproof, ...