Electric Vacuum Suction Cup \n \n? Max. lifting capacity: 170Kg(375lbs) \n \n? Powered by 21V lithium-ion battery \n \n? Digital gauge showing pressure \n \n? Smart sensor monitor maintains optimum suction \n \n? Double layer pad for smooth surfaces \n \n? Additional pad specifically for textured items \n \n? Continuous working - 3 hours \n \n? Full charging - 2.5 hours