Consists of 8 lessons 30 minutes each for 4 hours instruction. I spent 30+ hours listening and repeating each lesson multiple times in my car while commuting. I highly recommend this product as well worth the money. What it teaches, it teaches well. But, only 4 hours of lessons has its limits. The selection of phrases I am sure is good but still, limited due to the fact that it is only 4 CDs. I live on a tropical island and meet Japanese tourists every day, these lessons have been great but I still can't carry on a significant conversation. These CDs, which were easier and had me speaking better than a ... eight week class at the community college, gave me the ability to attempt a conversation with a Japanese speaker. I have just ordered the Pimsleur Japanese One 15 CD set ... . Wish me luck. My recommendation is, if you need to get comfortable speaking a few Japanese phrases like "My name is", "I'm an American", and "I only understand and speak Japanese a little", so that you are ready to go up to a Japanese person and say "Hi", order this product. If you are serious about and want to learn conversational Japanese, skip this product and go for the much more expensive Pimsler Japanese One.