Wooden city is a polish manufacturer of wooden mechanical models; it is a modern form of 3d puzzles for self-assembly without the use of glue. the prototype of the first model was developed in 2015 and it was the beginning of the birth of the wooden city brand. the experience gained during this period resulted in the dynamic development of the company and the creation of new models.the production process is fully automated; environmentally friendly birch plywood is used for the production of 3d puzzles.mystery boxwho doesn’t love a good mystery? This mystery box is the perfect gift for the little adventure lover in your family. make it a family project to put this box together. the time you will need to slide the high precision laser cut pieces into each other is a good way to spend quality time with your family. you won’t need glue, so don’t be afraid of a mess. features- high-precision laser cutting - no glue required- number of plates: 4- number of parts: 176- has a hidden mechanism in the lid - estimated time for assembly: 7 hours- recommended age: 14+ years- more models available- including: detailed instructions in 8 languagesproduct information - product: wooden city mystery box - wooden model kit- material: environmentally friendly birch plywood- dimension model: l 14.5 x w 14 x d 10.5 cm- packaging dimensions: l 35.5 x w 24 x d 4 cm- packaging weight: 1028 grams- packaging: luxury wooden giftbox- brand: wooden city