... size:15 ,17, 20,22,23 inch Grade A LCD monitor,three year guranteed.Brightness: 300cd/m2, Contrast ratio:1000:1 ... -rust,anti-acid,anti-dust 5.Optional accessories: 1.Bluetooth connection . 2.Printer:Epson 80MM thermal printer with auto cutter or ... steel,waterproof,encrypted ; 5.High quality camera; 6.WiFi for internet connection ....Compliant with windows XP/ Linux/ 2000, windows 7Welcome to contact ...