This unit has several nice features however I was not impressed with the battery life. I spent about 2 1/2 hours learning how to use and loading this unit. The next day after playing for 1 1/2 hours the battery was dead. The second battery lasted 3 1/2 hours. Then I tried a rechargeable which lasted 2 1/2 hours. I don't see how the manufacturer can say 12 hour battery life. Additionally, the manual was of little use.