Includes museum issued collector's manual. Official BMW licensed product. 200 part kit. No glue or special tools necessary; build it yourself in about 3 hours 1:2 scale transparent working model; see all parts move through the high quality plastic casing Working five-speed gearbox; flip through the legendary BMW gearbox and witness the engineering Original engine sound; recorded from an actual r90 airhead flat six. Once built, press the button and experience the engine's sights and sounds