Requires 12 Steps to find the secret compartment and was a limited edition puzzle. Beautifully crafted natural wood sheeting is affixed to the lid, reverse and sides. The keys (slides) on this particular piece are well hidden. Comes with opening diagram and gift box! Measures* 4.53 x 3.23 x 2.13 inches Secret Space measures 3 x 2.6 x 1.5 inches Stamped with artist's hanko. Urethane finish.