If you like to build historical spacecraft then this kit is a must have being the first successful satellite luanched by the USA in 1958... The kit is simplistic but well detailed out of the box (with a bit of imagination it could be furture detailed)... There are a few fiddly areas of the build but with a little patience real go together with no problem... The hardest part was masking and painting the nose cone (it can get a bit interesting)... The rocket opens up to reveal a nicely detailed payload of scientific equipment (radiation detection) and can be enhanced with careful painting... Overall this is a great kit reissued by Glenco Models and is suitable for beginner to advanced modeler alike... Highly recommended...