This is a magic pendant from a 1990s issue of the magazine "Shogaku 6 Nen Sei" (Sixth Grader) used to match pictures by moving the spinning top. The instruction manual was sent separately via postcard, but it's heavily stained and dirty, and has the recipient's address written on it, so a copy of the paper in the image will be enclosed instead. It has been stored at home for a long time, so details about the item other than those on the postcard are unknown. The rubber band holding the spinning top in place may be deteriorated, but it hasn't been checked because it could be accidentally broken during inspection. Therefore, please consider purchasing only if you are okay with the item in its current condition as shown in the images. The images include the pendant, a copy of the instruction manual, photos of the pendant from various angles, and the pendant placed next to a ruler for size reference. General precautions for all items are listed in my profile, so please check them before making a purchase.