... and easy to pucker. It is mainly used in office, hospital, lighting keyboardThis EL keyboard consists four parts of silica gel, ... span. It is mainly used in office, hospital, internet bar, lab and so on.- name:EL key board.-colour:various colour.- ... .-power: directly connected to laptop or computer.-specification:85 key board, 109 key board.-advantages: water proof, dustproof, acidproof, alkaliproof, ...