This is beautiful and impressive. It is hand crafted in solid oak. You present a box within a box. The smaller box contains 4 blocks numbered one through four. Turn your back or leave the room and have a spectator place the blocks in any order inside the smaller box. They close the lid and place the smaller box inside the larger box and close the lid of the larger box. It is virtually impossible to see inside the entire unit, yet you divine the exact order of the blocks every time! Nothing to reset. The spectators handle every part of both boxes. It is uncanny mentalism at its best!