... -quality silicone watertightness ,acid and alkaline-proof ,high dustproof USB flexible keyboard: anti-pollution, watertightness, acid adn alkaline-proof, high dustproof, ... colors, the button bears to rype 2 million times.the keyboard is applicable to office ,hospital classroom, workshop, metwork bar, ... 2000/Me/XP Commvnication:USB,PS2,USB+PS/2 Layout:85Keys Dimension:495*138*12(L*W*H) Electroni data:+ ...