The miracle LED Rough service garage door and Fan bulb is an extreme energy Saver. Get huge energy savings replacing 40-60W bulbs with the miracle LED Rough service LED long life 2 Pack -- up to 53 dollars a year by replacing just one bulb! the high vibration and shock produced by your garage door opener and ceiling fans kill normal bulbs, but not this long-life LED bulb. This breakthrough LED light is vibration and shock resistant and has an expected lifespan of 20, 000+ hours you may never have to replace another Fan or garage bulb again! trust miracle LED, one of the pioneers of LED development and quickly becoming a household name, to provide safe and efficient bulbs that last for years to come. This bulb is the pinnacle of our efforts over the last 8 years and combines the classic a-shape Edison style you're used to with our revolutionary almost free energy LED technology. Led chip technology is the safer and more efficient choice because it's manufactured with no mercury or lead, starts up instantly, and saves money. Technical specifications: 6000 Kelvin color temperature; standard E26 medium household base; 20, 000+ hour estimated lifespan; 0.60 dollars estimated annual energy cost.