Home Slickdeals Roborock S4 Robot Vacuum with Selective Cleaning – $300 + Free Shipping Slickdeals Roborock S4 Robot Vacuum with Selective Cleaning – $300 + Free Shipping By ARCOM - 5 February 2020 134 0 SHARE Facebook Twitter Go to the deal page: Roborock S4 Robot Vacuum with Selective Cleaning – $300 + Free Shipping