Mystic Marvels LLC Negative Ion Projector (A True Negative Ion Generator/Air Ionizer) -8 to -10 kilovolts of electrostatic output produces an ion density of at least 1,000,000 negative ions per cubic centimeter at 3 feet away (the negative ion concentration near Niagara Falls is about 100,000 ions per cc). WARNING: Please keep this product at least 7 or 8 feet away from all electronic devices that are plugged into an outlet. Runs very quiet (only a faint "hiss" from the ion emitter) and produces virtually no ozone. Ozone concentration is approximately 20 ppb at one foot away from the ion emitter. Ozone was not detected at distances greater than one foot. Power consumption is EXTREMELY low (it would take 75 of these units to equal the power consumption of one standard 75 watt light bulb). Please Note: This product was made to be operated 24/7 and does not contain an ON/OFF switch. To power the unit, just plug it in. This product was not made in China but here in the U.S. The internal circuitry is robust and is made to last for many years. Don't let the small size of the product lead you to underestimate its performance. The unit is tiny but mighty...and it was made to last. Unit is constructed with flame retardant ABS plastic, RoHS Compliant components (lead-free), and lead-free solder. Includes Instruction Manual and free Ion Detector. Comes with a 30 day money-back guarantee and is covered by a two year warranty (no need to fill out a warranty registration card). WE SERVICE WHAT WE SELL! If at any time the unit fails after the warranty has expired just ship it back for repair (repair costs are very reasonable).