Wattage (watts) Lifespan Color Temperature Actual Color Temperature Anion Coverage Anion Output Indoor/ Outdoor Manufacturer Warranty | 4 W 50,000 Hours Bright Blue 5,000 K 108 square feet 1.5 million anions per cubic cm Indoor 1 Year | Watt Equivalence Light Output Rated Frequency Light Bulb Base Type Commercial/ Residential Assembled Height Assembled Width Assembled Weight Safety Approval | 40 W 450 Lumens 50 - 60 Hz E 26 Commercial/ Residential 6.75 in 3.25 in 7 oz UL, CE |