Fun Fact: Roborock S6 MaxV runs Android 3.18, and the S7 MaxV runs 4.4, other roborock models usually run either OpenWRT or Ubuntu/Linux (credit to Dennis Giese for finding about this) :
Amazon.com - Roborock Q7 Max Robot Vacuum and Mop Cleaner, 4200Pa Strong Suction, Lidar Navigation, Multi-Level Mapping, No-Go&No-Mop Zones, 180mins Runtime, Works with Alexa, Perfect for Pet Hair(Black) (Renewed)