FRESH AIR EVERYWHERE YOU GO! Benefit from a decade of advanced research from the pioneer in ionic wearable air purification. Wein Products has been known for making some of the best air ionizers for decades! The new AS-300 Personal Air Purifier offers fantastic personal air purification and now offers a rechargeable benefit!. The AS300 will run approximately 28 hours on a single charge. The device is super light and easy to wear. The device propels cleaner, fresher, and healthier air into your breathing zone. Created especially to help breathe more easily when on the go. This device also comes with a breakaway strap for user safety. How it Works: The AS300R rechargeable Air Purifier generates a whirlwind of electrostatic ions that charge floating particles in the breathing zone. These particles are electrostatically repelled from the wearer creating a particle-free zone from pollutants and contaminants in the effective area. Perfumes and odors are also minimized by the AS-300R effect.