120 V. Indoor/interior. Brightness - 1600 lumens. Estimated energy cost - $2.77 per year. Energy Star. 23 watts = 100 watts. Lasts 7 years based on 3 hours average use per day. Lighting facts per bulb: brightness - 1600 lumens; estimated yearly energy cost - $2.77 - based on 3 hrs/day, 11 cents/kWh; cost depends on rates and use; life - 7.3 years - based on 3 hrs/day; light appearance - 2700 K; energy used - 23 watts. These lamps comply with federal energy efficiency labeling requirements. Unconditional guarantee. Reliable operating temperature range 0 degrees F (-18 degrees C) to 100 degrees F (40 degrees C). Color temperature is 2700 K. Light output has more than 5% decrease when lamp is used in base down position. Lamps operated in recessed or enclosed fixtures will have reduced lamp life. C UL US listed. This product complies with Part 18 of the FCC rules but may cause interference to radios, televisions, wireless telephones and remote controls. If interference occurs, move the product away from these devices or plug it into a different outlet. Do not install this product near maritime safety communications equipment or other critical navigation or communication equipment. For additional product information, call 1-888-423-0139. As an Energy Star partner, Topco has determined that this product meets the Energy Star guidelines for energy efficiency. Made in China.