UGEARS Book of Secrets 3D Puzzle Box - 3D Wooden Puzzles For Adults, Fun DIY Kits for Adults - Steampunk Combination-Lock Treasure Box Adult Puzzles Unique Gift for Hobby Enthusiasts - 263 Pcs

This wonderful 3D wooden puzzle is a Steampunk-style chest with a numerical combination lock.It is shaped like a book, with a secret compartment, a multi-step opening sequence, and a fascinating mechanical action.Its Book of Secrets opens by entering a three-digit numerical combination on the spine of the book, to reach the secret key.Insert the key into the special slot and turn it counter-clockwise to activate the opening mechanism, then turn the gears counter-clockwise so you can finally open the book.Different windows on the chest will indicate if you have correctly completed each of the steps.The mechanical 3D chest with its complex opening sequence has many mysteries and is both a fun way to store your things and an enjoyable game in which you can challenge friends or family to discover the hidden features of the Book of Secrets.Recommended age:14 years and older.Safety warning:Warning:This item is not a toy.For use by persons 14 years of age and older only