About This Product The EcoSmart A19 Filament LED Light Bulb uses only 4.5-Watt and lasts up to 15000-hours. This LED bulb is energy efficient- can last up to 13.7-years. The bulb is designed for indoor use and features an A-line shape and medium base. Highlights Brightness: 450 Lumens Life: 13.7-years (based on 3-hours_day) Light appearance: 3000K (bright wihte) Estimated yearly energy cost: $0.54 (based on 3-hours_day- 11c_kWh- cost depend on rates and use) Energy used: 4.5-Watt (equivalent to a 40-Watt standard incandescent light bulb) Shatter resistant Energy Star Dimensions Product Diameter (in.) 2.36 in Product Height (in.) 4.84 in