... charging 2,Mini , won't take up the space 3,Intelligent space detection-will not fall off edges Detailed Product Description ... visual*Clearly words display*Wireless remote controll *Extreme low noise ROBOTIC VACUUM CLEANER 2012 VERSIONITEM NO.: HX-11SPECIFICATION:-Input Voltage:100-240v-Output ... for room size-small ,medium,large(S,M,L)-Intelligent space detection-will not fall off edges,such as stairs ...