Free shipping. Roborock S7 robot vacuum is the Winner of 17 Best of CES 2021 Awards, from Business Insider, Digital Trends, Newsweek, How To Geek, and many more. Sonic Mopping Technology. Roborock S7 robot vacuum mops with the power of sound, scrubbing up to 3,000 times per minute. Fed by a 300 ml electronic water tank, stains from coffee to mud and more can be cleaned deeply and effectively.