Vileda Relax M-488A Robot Vacuum Cleaner Perfect to have on your hard floors. Doesn't require any setup at all, turn it on and off it goes. Sensors around the unit detect drops like stairs and edges such as work units or walls and will re-route itself. Doesn’t come with a charge plug but these can be picked up on eBay for less than £10, hence lower price for unit. Fully tested and operational.
eBay