Introducing the Lefant Robot Vacuum Cleaner, Tangle-Free Suction, Slim, Quite, Automatic Self-Charging, Wi-Fi/App/Alexa/Remote Control, Good for Pet Hair, Hard Floor and Low Pile Carpet, M210 Black. This unique product is designed to make your life easier with its upgraded FreeMove Technology 2.0 and small body design. The 6D built-in anti-collision infrared sensors help the robot vacuum sense the surrounding situation in 360 degrees, while the anti-dropping sensors prevent it from falling off the stairs. With an 11`` diameter and 2.99`` height, this robot vacuum cleaner is slim and easy to maneuver. The Lefant Robot Vacuum Cleaner is also equipped with Wi-Fi/App/Alexa/Remote Control, making it easy to control from anywhere. It is also good for pet hair, hard floor and low pile carpet, making it a great choice for any home. With its tangle-free suction and automatic self-charging, this robot vacuum cleaner is sure to make your life easier.