3D Wooden Puzzle Mechanical Treasure Box Model DIY Brain Teaser Projects for Adult Kid Age 14+

has been focusing on DIY wooden puzzle toys and building projects for 13 years. Our vision is to provide creative gifts and interesting life concept with our smart 3D puzzles. We hope we can keep the passion for hands-on activity in today's noisy world. Put phones down, and experience the pure fun between adults and children, husband and wife, families and friends. NEW ARRIVALS Visit the Store NEW ARRIVALS Visit the Store Solar System Orrery Highly Recommended Visit the Store Toys for Kids Visit the Store STEM Projects Visit the Store【Front】This rotary knob is used to enter the password to open the box. The password is set at the time of assembly. It cannot be changed when finished. The password is a three-digit number. You have 810 choices between 000 to 999, But 190 combinations were not available, please refer to the manual for details.【Back】There are two holes in the back that can insert the key, open the box and rotate the key so that the inner tray can open and rise.【Top】Rotate t