Exterior cleaning Alcohol disinfection complete Infrared operation confirmed No back cover It can be used, but since it is a used item, please check the condition in the photos and understand before purchasing. We also check the operation before shipping, but please check the operation after arrival, and if there is a problem, please contact us via message before evaluation. Please note that we may not be able to accept returns after evaluation. * Regarding the purchase of used remote controls We do not accept cancellations or returns due to the reason that the model did not fit. If you cannot confirm the model number, please refrain from purchasing if you are unsure.