Please read latest instruction before use. Package List: 1x Boot Dryer, 1 x User Manual Specifications: Voltage: 110V-130V~60 Hz Power: 200 W Heat Air :For optimal performance, please use the shoe dryer indoors. The working principle of the heating wire : The heating wire within the shoe dryer operates by converting electrical energy into heat energy through resistance, resulting in the generation of hot air for drying purposes. Drying Timer: 99 Minutes(Smart )/120 Minutes for wet footwear Time settings for warm: Sport shoes: Approximately 20 minutes Boots: Approximately 20 minutes Leather shoes: Approximately 15 minutes Working noise level: 55dB or or less. Product expiration date: None. If it is not used for 2 years, please check it before using or just discard it. Usage duration:500-600 Hours Please adjust your dryer with following step if it falls over: 90 degree angle stretching: for gloves and socks 75 degree angle stretching: for leather shoes Gym shoes 45 degree angle stretching: for boots If you are still experiencing difficulties, please do not hesitate to reach out to our team for further assistance.