Spiral Gold Recovery System Includes: built-in 12-volt battery, built-in 110 volt charger, complete and ready to use the minute you buy it. This unit will process 140 lbs of material in 60 minutes. No need to screen the material first, material up to 2 inches can go right into the machine, it does the screening for you. Sets up in less than 5 minutes. Works wet or dry. Dry you are concentrating the material, 140 lbs down to approximately 2 cups. Wet it will process the material down to clean gold. Shipping Weight: 15lbs.