Although it is a new, unused item, the packaging has scratches and stains due to long-term storage. Price reductions are negotiable, so please feel free to ask. 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 having fun. 【Japanese Instruction Manual (with Experiment Guide)】To make it easy for young children to understand, the guide book and the actual parts share the same colors and numbers. Age target: 6 years and up