Ugears Treasure BoxUGears Mechanical Treasure Box is a unique IQ teaser puzzle that has been dynamically engineered to be self assembled. The assembly kit consists of intricately carved woodwork of the highest quality that is eco friendly. The delicate carved work of its lid and sides invites you to gain a glimpse into the mystery that the moving gears conceal. Assembling this high precision model is not very difficult, and it can be set up in just a couple of hours