PRODUCT GRADING Open Box > As New > 12 Months Warranty Retail Box WHAT IS IN THE BOX Lefant M201 Self-Charging Robot Vacuum Cleaner PRODUCT DESCRIPTION The Robot Vacuum has upgraded 6D built-in anti-collision infrared sensors that help the robot vacuum detect probable stuck areas and adjust the cleaning path automatically. Anti-dropping sensors prevent the robot vacuum cleaner from falling off the stairs. Smart Vacuum Robot Cleaner supports 4 clean modes including Auto clean, Spot clean, Wall Follow clean, Manual clean. Freely switch between different modes and power levels as you want via the app. The Robotic Vacuum Cleaner with an 11\'\' diameter and unibody design, the lefant robot vacuum cleaner M201 slides under and around the bed, sofa, and other furniture for a thoroughly clean with high coverage and ultra-low failure rate.