Every Lustre glass cover is handcrafted by a master glassblower trained for years in the art of glasswork, making each Lustre diffuser a unique work of art that will illuminate the décor of any home. High diffusion mode that can run up to 6 hours, or with 3 different timer options: 60, 90 and 120 minutes. 8 different LED light options that run independent of diffuser function. Intermittent diffusion mode that runs up to 12 hours, at intervals of 30 seconds on and 30 seconds off.