Meet Airburst – our patented – NEW waterless diffuser. After 7 years of development finally here. Enjoy cordless waterless diffusing for up to 36 hours per charge. Airburst runs whisper quiet and has 3 settings: 1) Motion Sensing 2) Time delayed 3) Cleaning Will fit a standard 5ml – 30ml bottle and has coverage up to 250 square feet. As always made from BPA Free recycled materials.