Apply the water-bath technology (siphon force plus centrifugal force to create waterfall effection), remove tobacco smoke and dust effectively. By water continuous scrubbing, it can speed up output of moisture and to maintain an acceptable level of air humidity. Concentrate Solutions: The raw materials is imported from Singapore and specially used at aircraft cabins clean air. It is obtained by way of ancient distillation methods from fresh fruit and flowers. It can generate negative ions and have great effect on removing bacteria and viruses, easing allergies caused by dust & air contaminants, repel insects, aromatherapeutic effects to relieve stress and fatigue. Natural fragrances: Add concentrate solutions to the container and enjoy continuous fragrance... Different frangrances are available. Adding insect repellent, it also can drive away insect. Adding antiseptic or vinegar, it can clear air in the room. Help to defend the habits sickness infection. Exquisite and practical design, convenient to use on computer with USB Jack. Weight: 15.5 Carton size: 74*25*46 Amount per container: 36 Color: Assorted Colors