PZ102 - 3D Wooden Puzzles Marble Run Set - Mechanical Model Kits With Motor

About this item The M02 is a classic hand-cranked model that can be hand-cranked to make it work after it is assembled. LG905 this style is electric, just need to install the battery, turn on the switch it can work by itself, the packaging does not contain dry batteries, you need to prepare yourself. Easy to assemble The instructions are very detailed and contain step-by-step illustrated instructions. Everything in the kit is clearly marked and labeled so that it can be assembled as easily as possible. Relax your mind The ability to exercise your brain helps you focus and allows you to take a break from the stress of studying and working to relax.