Operation has been checked. The serial numbers on the console and instruction manual match. This item is a very rare retro game machine made in Japan. In Japan and the U.S., items in beautiful condition fetch high prices among retro game collectors. I have been selling games professionally for over 10 years and this console is in the cleanest condition of them all. This is a one-of-a-kind inventory so this is a great opportunity to get it. The cassette terminal is almost intact, so there is a possibility that it has never been used, but I couldn't be sure, so I have lowered the condition by one. The controller and AC adapter are also in excellent condition with almost no scratches or dirt and minimal signs of use. The box is in excellent condition with no damage or fading. Sent in a box and protected. Shipped from Japan