The first screen is a computer LED screen. Its specifications are: screen size 19 inches And a blue VGA port And a three-pin power port Current: 1.0 Amperes Frequency: 60 Hertz 100 to 240 Volts The second screen is a computer LCD screen. Its specifications are: screen size 18.5 inches And a blue VGA port And a three-pin power port Current: 1.5 Amperes Frequency: 50/60 Hertz Voltage: 100-240 Volts Unit price: (150)