THREE BRUSH TYPES. ONE POWERFUL CLEAN: Tri-Brush System combines side brushes, channel brushes, and a multi-surface brushroll to handle debris on all surfaces..Form Factor: ‎Robotic INTELLIGENT CLIFF SENSORS: Shark ION Robot senses ledges and stairs and avoids bumping furniture and walls. CLEAN FROM YOUR PHONE: SharkClean app lets you start and stop cleaning and schedule your robot to clean whenever you want. EASY VOICE CONTROL: Use Amazon Alexa or Google Assistant to easily make the robot clean at your command in your connected home. 120 MINUTE RUNTIME: Whole-home, floor-to-carpet cleaning for up to 2 hours. BUILT, TESTED, AND PERFECTED: Shark puts their robots through rigorous testing, performing thousands of hours of real-life use to give you a reliable, ultra-powerful clean.