From Amazon's description: EFFECTIVE: Laboratory tests show Philips UV-C Light Sanitization Box can effectively inactivate spores on a surface to below detectable levels in minutes (Footnote 1) All-in-One UV Sanitizer Box: Large capacity allows disinfection of multiple items at once. Simply load your items evenly into the box and use touch control on the digital display to select your working mode. REFLECTIVE INTERIOR: The 6.5" x 7.75" highly reflective interior allows UV-C light to disinfect items more effectively. The stainless-steel chamber ensures each object's surface is reached, regardless of the way it is facing. ETL LISTED & EPA Certified: Philips UVC Sanitizer Box is ETL listed ensuring testing and compliance with safety and sanitation industry standards. Advanced auto-off feature added extra layer of protection of your eyes and skin. DECADES OF EXPERIENCE: Philips has over 35 years of experience in UV-C lighting for residential and commercial spaces. Decades of strong application expertise bring added peace of mind.