Samsung  POWERbot SR2AJ9040W Wi-Fi Robot Vacuum, Works with Alexa Works with Alexa for voice control (Alexa device sold separately). 10X more suction power* - Powerful suction delivers optimal cleaning results. Cleaning Speed 12.6 inch/sec. Dust Capacity 0.7 Litre Visionary Mapping Plus and FullView Sensor - Creates optimal cleaning path and avoids obstacles Wi-Fi Connectivity - Remotely control your robot vacuum with your smartphone via Smart Home or Samsung Connect, or voice control with Amazon Alexa or the Google Assistant*** CycloneForce Technology  More consistent power with less clogging** Easy Pass Wheels  Large wheels move smoothly over obstacles