Before using the shoe dryer, socks must be wrung out and wet shoes must not have any drips. You must keep your hands dry and prevent water from entering the device at all times. Please ensure that the cleaning agent has been washed thoroughly. If the cleaning agent remains in the shoes, the temperature of the shoe dryer will cause a chemical reaction of the cleaning agent, causing the fabric surface of the shoes to turn yellow. When drying shoes, keep a small distance between the heel and the shoe dryer. Otherwise, the shoe dryer cannot form air convection and the heel will not be easy to dry. The drying speed of shoes is related to the material of the shoes, their thickness, water content and drying temperature. Generally, it takes about 10-20 minutes to dry daily sweaty shoes, about 30-40 minutes for just washed socks, about 2-4 hours for knitted shoes and sneakers. The working time can be set flexibly, the longest time is 720 minutes. With constant temperature drying, our dryer can avoid shoes deformation, degumming and cracking. Rated power: 40W Rated voltage: 110V Gross weight: 1LB Applicable shoe size: 4.5US Temperature range: 113~140