This secret box will take 18 steps to unveil the hidden space. Each puzzle showcases beautiful Rosewood on lid and bottom with Ichimatsu sides. Measures approximately * 4.5 x 3.2 x 2.1 inches with a secret space of 3.0 x 2.59 x 1.22 inches. High quality urethane finish. Stamped with Oka-san's hanko and will arrive with opening diagram and gift box!