Function: Dryer and Storage Box: The SUNLU dry box is specifically designed for drying 3D printer filament designed to remove moisture from a filament spool. It can keep the 3D filament dry during a print job and can be used to dry the filament for storage. Heating Rotation and Constant Temperature: The storage box will keep heat up to your preset temperature and will continue to operate until the preset time. The SUNLU box has two built-in rotating shafts that allow the filament to rotate continuously in a dry hot box to remove moisture. Simple but effective: the filament dryer box is very easy to use it has a lot of functionality even with just two buttons such as temperature and time it loads the data of the current temperature and the current target temperature. 【Setting temperature and time】 The dryer box is preset to run for 6 hours at 122.0 ° F which should be compatible with almost any material of any filament diameter. But you can click the buttons to reset the temperature between 95.0 - 131.0 ° F or press the left button to reset the working time between 0 - 24 hours.