... size:15 ,17 19 20,22, inch Grade A LCD monitor,three year guranteed.Brightness: 300cd/m2Contrast ratio: 700:1Response ... interfaceQuality locks for doors of different parts on the cabinet 5.Ambient environment:Working voltage:110V- 220V AC, 50Hz-60HzWorking ... Metal keybaord with trackball,stainless steel,waterproof,encrypted ; 5.High quality camera; 6.WiFi for internet connectionWarranty: One year as a ...