What's The Difference?: iRobot Roomba 770 vs 780 vs 790
I'll compare the Roomba 770 vs 780 vs 790 and highlight the differences between the three models. ... iRobot Roomba 780 iRobot Roomba 790 1 iRobot Roomba 770 1 Rechargeable Battery with Extended-Life Power Management 1 Battery Charger (3-hour ......