I tried thoroughly investigating whether Anker's robot vacuum cleaner 'Eufy RoboVac 11S' that can be purchased for the 20,000-yen range evolved - GIGAZINE
For Anker Eufy RoboVac 11S 12 25C 30C Robotic Vacuum Cleaner Primary Filter Main Side Brush Hepa Filter Replacement Accessories - AliExpress
Eufy Robot Vacuum T2108 Boost IQ RoboVac 11S Slim Robotic Vacuum, Black 848061065329 | eBay