Review: The Roborock S4 is here to make quick work of cleaning | AppleInsider
Roborock E35 Robot Vacuum and Mop: 2000Pa Strong Suction, App Control, and Scheduling, Route Planning, Handles Hard Floors and Carpets Ideal for Homes with Pets : Amazon.ca: Home
My Roborock S4 is Making a Weird Noise! Robot Vacuum PSA #1 - YouTube