· 180° Lay-Flat Design: Effortlessly reclines fully to 180°, allowing for easy maneuvering under furniture or into low areas to clean hidden dust.· DualBlock Anti-Tangle Design: The dual-layer scrapers prevent hair tangling and clogging by capturing hair with a comb scraper and wiping away dirty water and hair with a straight scraper.· Flashdry Self-Cleaning System: Using heated fresh water to effectively dissolve stains from the pipe to the brush roller, and then using 185°F hot air to effectively dry every part of the machine. Truly worry-free after use.· Up to 50mins Runtime: Both clean & dirty water and battery power are constantly adjusted by Tineco iLoop. With upgraded pouch battery, S7 Stretch maintains a 50mins runtime even after multiple uses, effectively extending its lifespan.· Tineco MHCBS Technology: A completely clean floor with continuous fresh water washing and efficient dirty water recycling, at a constant 450 times/min.