intelligent robotic vacuum cleaner

Are you tired of spending time vacuuming at home? or are you just unable to reach every corner and under chairs while vacuuming?
This amazing robot vacuum may be the answer to all of your prayers.
vacuum will go all around your house picking up dirt, dust and pet hair while you sit back and relax. At the same time this small vacuum will kill bacteria and deodorize with its ultraviolet light.
This Robitic vacuum should be able to vacum every single inch of a room, detecting walls and furnitures so it avoids collition, even detects stairs so it wont fall down.

I remember back when these robotic vacuums was released, I wanted one, but they were so expencive I think the one I was looking at was about $1500, now these robot vacuums has been on the market for a while and the price is quite fair. This one cost only $139.00