Used in the company office until January 29, 2026. The transmitter has yellowed due to aging, but there are no noticeable scratches. The receiver is relatively new, so it has no yellowing and is in good condition. Both were working without any problems. This product is no longer sold new, but the receiver and transmitter are sold separately as used items on Amazon at a fairly good price (※Photos 9, 11). If anyone is interested, please consider purchasing. The item will be sent via the secure, anonymous Rakuraku Mercari delivery service (Takkyubin Compact). Shipping and the special box fee will be covered by the seller. Please note that the batteries will be removed from the receiver before shipping, so the buyer will need to provide three AA batteries. I am also listing items that I used at home, so please take a look and consider them as well.