Just picked this up last weekend.
Not too big & is portable.
Now I don't have to crawl under the car!!!
It is rated to lift 5500 LBS.
Lifts cars to about 6'.
Uses a car battery with a self contained battery charger.
Here is a vid link on the same type of unit.
https://www.youtube.com/watch?v=1sIc1BS0BjMMBHD