Please do not purchase if you cannot complete payment within 24 hours of purchase. If you anticipate a delay, please message me in advance. Upon arrival of the item, please complete the receipt confirmation within 72 hours. If, for any reason, you will be delayed, please message me. Operation check and infrared operation have been confirmed. Alcohol disinfection completed. This is a used item, so please refrain from purchasing if you are sensitive to such things.