DUO 3.0, featuring 1600 words and 1000 example sentences, is perfect for English learners. There are no noticeable stains. DUO 3.0 is said to be essential for English acquisition. Recommended by YouTubers like Kazuma and Shihandai. Also for those aiming to improve their English proficiency scores or achieve high scores on the TOEIC. - Title: DUO 3.0 - Contents: Includes 1600 words and 1000 example sentences - Size: Pocketbook size - Section: Practice exercises for English learning - Language: English and Japanese parallel text - Features: Collection of practical phrases Thank you for viewing.