no more hassling with dead or dying batteries at the worst possible times. this thing is full power whenever you need it. i recommend buying an extension cord, though, since sometimes the outlet may not be close enough to the bed or couch or whatever. not sure why there are 2 attachments, though. the curved one seems to work best, and i can't see much use for having both. not much really needs to be said - this product is a wise investment to improve your quality of life - the title prettymuch sums it all up.