I reviewed the evolution of Anker's robot vacuum cleaner 'Eufy RoboVac 30C' which can be purchased at the 30,000 yen range, from the previous model 'Eufy RoboVac 11 S' - GIGAZINE
Eufy Robovac 11S (BoostIQ) Review | Digital Trends
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Amazon.com - eufy RoboVac 11, High Suction, Self-Charging Robotic Vacuum Cleaner with Drop-Sensing Technology and High-Performance Filter for Pet, Designed for Hard Floor and Thin Carpet -