Please read the self-introduction. 18.5-inch TFT LCD monitor, made by Princeton. A keyboard is also included. Condition: Long-term home storage. Since the operation has not been confirmed, nor has the screen display been checked, please purchase only if you understand this. When the power cord is plugged in and the power is turned on, the light turns blue, and the monitor screen displays "[No signal input]", then the light turns red. Product Description - Brand: Princeton - Model: PTFBGF-19W - Size: 18.5 inches - Type: TFT LCD monitor - Voltage: AC 100-240V 50/60Hz - Power consumption: 12W Thank you for viewing.