Fully-functional cuboid differs from classic 2x3x3 in that it allows to rotate up and down layers after R, L, F, B, M or S moves. Also, under certain conditions, hidden E-layer can be twisted.
First version of cuboid much more difficult, because U and D turns here are impossible. Because of that it's hard to apply known algs from 2x3x3.
Manufacturer: LeFun (CubeStyle)