3D Wooden Puzzles with LED Light for Adults - Start your First Build Here Specification: Material: Made of basswood, laser cut, no burrs and does not hurt the hands. Pieces: 125 pcs Difficulty: 3 stars Assembly Time: 2-3h Power：a CR2032 cell battery (not included) Be Patience - As long as you have enough patience, you will perform DIY assembly according to the instructions, and you will complete this Model Kit soon. This is a very happy process. After the assembly is successful, you will have a different sense of success and joy. Mind Relax & Beautiful Decoration - 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; it is also a great decoration when finish the assembling. Hidden Ring Box - Rotate the top circle, and the secret storage will expose itself. You can keep rings or small items in it to surprise your love. It also has a sturdy handle to carry or hang. Light Up Your Way at Dark - Victorian Lantern is designed in a real LED lantern with sturdy handle. Once finished, the 3D puzzle will rotate beautifully with lovely tune upon windup. Step-by-step instruction - Occupy your hands with everything in one package. Every step is clear in illustrations. Just follow the manual strictly, and your time will be rewarded with grand end result!