MINIMATE GT Personal Ionic Air Purifier (Crystal Clear) Create your own personal No Smog Zone with this ultra-light miniature wearable air purifier worn around the neck or clipped to a pocket, invented and produced by Wein Products in USA NEW MODEL: Quality Assurance and new packaging and Owner's Manual by GreenTech Environmental LLC; tested at leading Universities and research institutes; the best available personal air purification at any price The lightest, smallest, highest ion output; propels cleaner fresher air into your breathing zone; thousands of commendations and testimonials worldwide; four US patents granted Outperforms the bulky inefficient competitive units through use of solid platinum permanent emitter and gold-plated stainless steel collectors; powered by a single CR123A 3v lithium battery (included) Also available in Classic Black (ASIN # B0088ISRTC)