iRobot Roomba 980/981 Robot Vacuum - FIRST TEST - As good as i7+? Do I recommend at the $200 Price? - YouTube
iRobot Roomba 981 Robot Vacuum-Wi-Fi Connected Mapping, Works with Alexa, Ideal for Pet Hair, Carpets, Hard Floors, Power Boost Technology, Black - Walmart.com
Roomba i7+ vs 980 - Detailed Comparison Plus a Money Saving Tip
iRobot Roomba 980 vs 981: What's The Difference | Comparison