This is a posable, older-type injection-plastic kit of an item from the Gundam universe.
One of the classic old Gundam kits from 1983, this reissue of the 1/72 RX-78 kit includes interior parts to allow you to build a cutaway version of the main mecha from the original television series. Kit includes a display base which holds batteries to light up a couple of mini light-bulbs that hide within the inner mechanism. The outer "skin" panels can be removed and replaced to reveal the insides.
These are glue kits, not snapfit!