Although it is new and unused, the packaging has scratches and dirt due to long-term storage. Price reduction is possible, so please feel free to contact me. Snap Circuits Jr. Upgrade Kit 300 to 500 with Japanese Experiment Guide The [Snap Circuits Upgrade Kit 300 to 500] is for those who already own Snap Circuits 300. This upgrade kit cannot be used on its own. Snap Circuits is a sensory development toy that allows you to learn about the mechanisms of electricity and electronic circuits while playing. [Japanese Instruction Manual (with Experiment Guide)] To make it easier for young children to understand, the guidebook and the actual parts share the same colors and numbers. Target age: 6 years old and up