Yosegi Japanese Puzzle Box [ 5 Sun 21 Moves + 1 Gimmick (Hidden Room) ] It's special version Yosegi box. 21 moves to open and 1 gimmick that hidden room appears. Yosegi box is traditional industrial art object with a history of over 200 years in Japan. You can enjoy the puzzles as well as beautiful gift box. Yosegi-zaiku in Hakone Maruyama Inc is designated as "traditional crafts" by the Minister of Economy, Trade and Industry. External dimensions: 5.9 x 3.8 x 2.6 / Internal dimension: 4.1 x 3.2 x 1.6 inch / English manual includes. Caution: You hear clatter when shake it. However, it is not a malfunction.