... times*Surface hardness: equivalent to glass,7 Mohs *Dust-proof, explosive proof*Durability:5years Grade A LCD monitor: Brand:LG ... : AC110V-240V ,50H-60HZ Network connector RJ45 connector and inner network connection, Optional accessories: *Barcode reader, Non ... Keyboard, stainless steel keyboard with trackball.*WIFI, GPRS,3G Modem*Web-Camera,* Thermal /Laser printer, bluetooth connection, etc. Color: ...