500 Watts drying power. Patented Converga-flow drying action. No tray rotation required. Adjustable Thermostat. Expandable from 4 to 12 trays. Set includes: 4 drying trays, 2 Fruit Roll Up Sheets, 2 Clean A Screens, large Jerky Gun with 3 tips (Gun holds 1 lb. ground meat), 2 Jerky spice & cure packs and an instruction/recipe booklet. Weight 8 lbs. 6 oz. Size: 14"x12"x14". 1 packet Spice Works needed for 1lb. of meat.