USB Powered WAP Wearable Air Purifier for Travel Car Home Office, 3-in 1 HEPA Air Filter, Negative Ion Generator & Aroma Diffuser for Virus Dust Protection, Asthma & Allergy, Stress Relief, Ozone Free JUST FILTERING NOT ENOUGH, HEALING YOUR BODY WITH HEALTHY AIR: Natural Fresh Air in Forest or Waterfall has Abundant Negative Ions which Strengthen Body's Immune System. Organic Aroma Relieves Mental Stress. Healthy Air Produced by HEPA Filtering, Ozone-Free Negative Ions & Your Favorable Aroma Heals Your Body and Mind. 3 IN ONE: Save Your Money. Smart Gadgets Co's New Technology Effectively Integrates HEPA filter, Negative Ion Generator and Aroma Diffuser into One Small Device, Wearable Air Purifier (WAP) ONE CHARGE SUPPLIES HEALTHY AIR ALL DAY LONG: WAP's Powerful Battery Life (Li-ion 2600 mA) Guarantees more than 13 Hours of Fresh Air with Only One Full USB Charge (4 Hours). Negative Ion Generator Produces 1.5 million Ozone-Free Negative Ions. Supplying Your Favorable Aroma with filtered air and at the same time protects the harmful effects on HEPA's performance. BEING COMFORT AND HEALING ANYTIME, ANYWHERE: WAP's Powerful Performance but Light Weight (8.1 oz.). Make You Comfort and Continuously Healing with Healthy Air. Even in Indoor or Outdoor Harsh Environment, WAP Protects You from Airborne Pollution BUILD YOUR OWN AIR SHIELD: Ergonomic design provides adjustable guide to customize the neck size and its trendy design goes well with casual outfit or a formal dress. User's Guide is available in English, Spanish, French, German, Italian, Chinese and Japanese. WAP protects you from airborne bacteria and with its negative ion effects and aromatherapy improves your health.