LEGO Mindstorms NXT 2.0. The contents are unused, but some of the parts bags have been opened, so there may be a shortage of small parts. As shown in the third photo, the main parts (motors, sensors, etc.) are all present, so please check. Also, the outer box has stains and damage, and shipping costs are involved, so it has been disposed of. Please note that the outer box will not be included even if you purchase this product.