The Nose-1 is the most advanced sleek and modern design personal air purification system with 360° air-vent+ 478 air holes that rotate 38° in horizontal direction. It safely sanitizes the air in your place in a few short minutes making it more breathable, enjoable, and even healthier. ADVANCED TRIPLE FILTERATION - Pre-Filter, TRUE HEPA Filter, Activated Carbon Filter & High-density Negative ions. The H13 Level HEPA Filter deducts 99.75% of PM 2.5 and the Carbon Filter features 95% of Ozon, Formaldehyde, Dioxin deodorizing function. USB Powered, Low noize 28db~35db, simple 3-buttons operation, Proven quality! Customer Satisfaction guaranteed! Designed and Made in Korea.