There are three batteries. Fan and battery set. There is a new set of fans and another set that has been used. The used ones have some dirt, etc.! It's 50V and has a very strong airflow, so it's also quite loud. The voltage levels are: 20 25 30 35 40 50 Since there are three batteries, it can easily last all day even when running at 50V! It will be sent by letter, so it will be shipped without the box!