iRobot Roomba i4 Robot Vacuum with Virtual Wall - YouTube
Costco shows an i4 robot to compare with the i7+ on its site. The link to the actual listing for the i4 does not work though. It appears that the i4 somehow
Amazon.com - iRobot Roomba i4 EVO (4150) Robot Vacuum – Clean by Room with Smart Mapping, Wi-fi Connected, Compatible with Alexa, Ideal for Pet Hair, Carpets & Hard Floors -
iRobot Roomba J7 7150 Robot Vacuum with Smart Mapping, Identifies and avoids obstacles like pet waste & cords j715020 - The Home Depot
Amazon.com - iRobot Roomba i4 EVO (4150) Robot Vacuum – Clean by Room with Smart Mapping, Wi-fi Connected, Compatible with Alexa, Ideal for Pet Hair, Carpets & Hard Floors -
iRobot Roomba i4+ (4552) Robot Vacuum with Automatic Dirt Disposal - Empties Itself for up to 60 Days, Wi-Fi Connected Mapping, Compatible with Alexa, Ideal for Pet Hair, Carpets - Walmart.com
iRobot Roomba i4 - YouTube
Amazon.com - iRobot Roomba i4 EVO (4150) Robot Vacuum – Clean by Room with Smart Mapping, Wi-fi Connected, Compatible with Alexa, Ideal for Pet Hair, Carpets & Hard Floors -
Roomba® I4 Robot Vacuum | iRobot | iRobot
Irobot Roomba I4 Robot Vacuum With Automatic Dirt Disposal - Empties Itself For Up To 60 Days, Wi-fi Connected Mapping - Electric Sweeper - AliExpress
Roomba® I4 Robot Vacuum | iRobot | iRobot
Up To 49% Off on iRobot Roomba i4 Vacuum Clean... | Groupon Goods