This secret puzzle box requires 18 Steps to find the secret compartment. Beautifully crafted Natural wood is crafted to the lid and bottom with Ichimatsu patterned sides. Comes with opening diagram and gift box! Outside size : 3.1 x 3.1 x 1.97 inch (80 x 80 x 51 mm) Inside storage space size : 1.6 x 2.5 x 1.3 inch (41 x 63 x 33 mm) Urethane finish.