No box or instruction manual. I've opened the battery compartment to test the functionality and have included a photo of the search screen for the Japanese dictionary translation on the back. Please take a look. Japanese Dictionary: Based on the "Sanseido Gendai Kokugo Jiten" published by Sanseido, it contains approximately 50,000 headwords and 60,000 definitions. It also includes a wealth of four-character idioms. English-Japanese Dictionary: Based on the "New Century English-Japanese Dictionary" published by Sanseido, it contains approximately 47,500 headwords and 64,500 translations. Japanese-English Dictionary: Based on the "Shin Crown Japanese-English Dictionary" published by Sanseido, it contains approximately 31,000 headwords and 31,000 translations. Pocketbook size: 8 cm (height) x 13 cm (width) For those who understand that this is a used item, please.