Does second-hand smoke make you sick? Do you come down with colds and flu after airplane travel? Fight back with your own personal, portable source of clean air. Air Supply, the world's first and only wearable air purifier, draws contaminated air into its unique corona discharge chamber where impurities are destroyed naturally. Purified air (similar to the clean, fresh air created by a thunderstorm) then streams silently upward at about 100 feet per minute (about the same flow as human breathing) to your mouth, nose, and eyes. This is the same technology (far more effective than ionization) that has been used by the military and industry for years, now miniaturized with microcircuitry for personal, portable use. Air Supply operates approximately 30-35 hours on one 9-volt battery (not included). Adaptors for operating from wall sockets and auto cigarette lighters included. If you use a pacemaker, please consult your physician. (3 1/2 x 2 1/2 x 1")