MOOSE RT40 Smart Robot Vacuum Cleaner, Your Best Cleaning Helper. With 2200Pa strong suction power, RT40 RoboVac can auto-adjust more powerful suction from hard floor to carpet. 110 mins lasting time provide non-stop cleaning for 150m area. This robotic vacuum is compatible with Alexa & Google Assistant, and it will automatically recharge once the battery becomes low, no worry about the battery died. Perfect cleaning performance, meet all your needs. Just get rid of the tedious daily cleaning, enjoy your time with family and friends.