Note: This item is shipped from China(Hong Kong); Delievey time: 12-15 business days * Negative ion air purification function, effectively remove the air of smoke, dust, allergens, so that more fresh air * Unique way the computer USB power supply, convenient and practical; Compact, attractive, easy to carry * No secondary pollution, environmentally safe * Air as raw materials, power consumption, saving and environmental protection. Small and exquisite, in fact, share and gifts