LDS NAVIGATION: Using LiDAR Navigation, onboard maps are incredibly accurate. detects and navigates your home, avoiding obstacles or falling off of ledges. Not only capable of self-charging but when fully charged, it can restart the sweeping job from where it didn't finish the last time it cleaned. POWERFUL AND LONG BATTERY LIFE: With powerful suction and up to 120mins of runtime, eureka ner650 robot vacuum cleaner covers up to a 2,152 sq ft area, perfect for efficient day-to-day cleaning maintenance. REAL-TIME MAPPING AND FLOOR TYPE DETECTION: NER650 robot vacuum can generate floor plans, set customized cleaning and “no-go” Zones；automatically increases suction power on carpets for an optimized clean. CLEAN THE WAY YOU WANT: Use the eureka app or Alexa、google assistant voice control to schedule and control the robotic vacuum cleaner from anywhere. Only 2.4ghz wifi support. V-SHAPED ANTI-SCRATCH BRUSHROLL: Specially designed to protect your hard floors, clean the carpet using a combination of specially angled soft bristle brushes and flexible rubber blades.