I’m using this product since 2 years , this delivers us a very fresh air which is usefull to small babies and adults as well , this could enhence our living quality by giving us a quality air , Allthough this is benefiting me more as i’m drink hukkah in my premise it constantly recycles smoke of hukkah and delivery accurate amount of oxygen. by purchasing this product you may live more than usuall by having a good health. This is light in weight , easy to transfer , portable .