Image Item No. Description  53788  Mindstorms NXT - Complete Brick with Dark Bluish Gray Base Catalog: Parts: Electric, Programmable  3173c01  Record and Play Module, 16 x 10 x 4 with Built-in Motors 4.5V Catalog: Parts: Electric, Programmable  4232c01  Spybotics Module Catalog: Parts: Electric, Programmable  4232rc  Spybotics Remote Control Catalog: Parts: Electric, Programmable