*Difficulty-Moderate Beautiful Natural Walnut wood on top and bottom with a Kuzushi pattern adorning the sides of the puzzle box. Measures* 4.52 x 3.2 x 2.1 inches The Secret space measures: 3.26 x 2.59 x 1.49 inches High quality urethane finish. Stamped with crafter's hanko. Comes with opening instructions and gift box!