... ,dustproof ,it can shining at night ,make a vividly effect EL key Board.It's thin, soft, waterproof, long lifetime and easy ... to pucker. It is mainly used in office, hospital, internet bar,EL ... : directly connected to laptop or computer.-specification:85 key board, 109 key board.-advantages: water proof, dustproof, acidproof, alkaliproof, thin(0. ...