Update on review.  This robot didn't last.  It started spinning in circles after two weeks, it was kinda confused.   Wouldn't charge on the doc and had to plug in directly to the robot.  Not very happy after it gave out.  ************I am so impressed. I had just vacuumed b4 product arrived and I thought I had clean floors. Boy was I wrong those that have dogs know the struggles with dog hair on floors hidden in the corners.  Well this is a keeper I love it. Highly recommended just look at the pic and that was just  in a few minutes. Went under the bed, tables then goes home to charge up. I can relax now. Thank you soooo much for a wonderful product.