Before listing, the item has been cleaned with alcohol. As it uses a wireless system, infrared checks etc. are not possible, and the operation has not been confirmed. Please understand and purchase with the knowledge that its functionality is unknown. - Batteries are not included. - As this is a used item, there are signs of wear and tear, scratches, and minor stains due to age. Please check the photos before purchasing. Batteries are not included, so please prepare two AAA batteries.