"AIRFRESH Deodorizer Version Width Height Depth Item number * 7.40 cm 6.50 cm 9.80 cm 20401899 Description 9 x 6.5 x 48 cm ANTIDEODORIZATION: built-in live oxygen generator to convert air O2 into O3. O3 has live oxidation, which can decompose the source odor molecules and reconvert them into harmless gas. It can also destroy the cell membrane structure of bacteria and have a good sterilization effect. Used on the cat toilet to remove odor Infared sensor Kill bacteria No filter needed Super silent USB charging"