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 Shark Detect Pro self-emptying robot vacuum is on sale for $480 during the Walmart Shark Days event, down from the normal price of $599.99. That's a 20% discount.

Save big on this Shark robot vacuum that can empty itself. Credit: Mashable Photo Composite Deal pricing and availability subject to change after time of publication. Learn more about how we select deals.

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.