The Shark PowerDetect 2-in-1 Robot Vacuum and Mop with NeverTouch Pro Base is a black circular robot vacuum that’s 13 inches in diameter and has a cleaning path width of 5.69 inches. At 2.7 inches tall, it can fit under most cabinets.

The new Shark Cordless PowerDetect Clean & Empty Vacuum has an MSRP of $499, which is comparable to the brand’s other high-end cordless models like the Shark Stratos Cordless Vacuum. This new model is available through the Shark website and is also $499 on Amazon .

Summary: The Detect Pro cordless stick vacuum is smarter, with more advanced detection and auto-adjustment capabilities. The Stratos has more outright suction, and is a little heavier. You can opt to add an auto-empty dock to the Detect Pro.

If this sounds familiar, a robot vacuum can save you time and energy, and thanks to Walmart's Shark Days event, you can grab one for much less. As of Oct. 3, the Shark Detect Pro self-emptying robot vacuum is just $480 at Walmart,