These are all 48 volumes of Speed Learning CDs. They come as a set of two: English to Japanese version English only version All are genuine products and include textbooks. Volumes 1-12 and 14-20 have been opened. The rest are unopened in their packaging. The opened items have been confirmed to be in working order. Volumes 1-4 of the textbooks have been opened; the rest are unopened. I purchased them but did not use them much and have kept them in long-term home storage. There may be scratches or dirt that were not noticed during inspection. Please only consider if you understand that these are used items. #SpeedLearning #SpeedLearningAll48Volumes