SANSI A21 36W LED 3000K/5000K Light Bulb (US/CA ONLY)

Bright & Efficiency: Compared with other LED bulbs, SANSI's highly efficient light bulbs can provide 5500 lumens using only 36 watts of power, equivalent to 350W incandescent bulbs. Based on 3 hours per day usage, save up to 95% electricity, annual estimated cost $3.94 Flicker-Free: Adopting high light transmission optical lenses, up to 126 LED chips can not only provide you and your family with the light source they need daily but also provide a healthy living or work environment. No flickering, no noise Patented Ceramic Technology: SANSI's patented technology replaces the traditional Mcpcb aluminum substrate with a non-conductive ceramic heat sink, directly soldering the LED chip on the ceramic heat sink, effectively reducing the systematic thermal resistance between the LED PN junction and the surface of the heat sink, resulting in faster heat conduction and higher product reliability, making SANSI's bulbs perform with higher light efficiency Extend the Lifespan: The temperature of the LED bulb made of ceramic material is very low when it is working, and its flame retardancy and heat resistance are better, it is not easy to cause the aging and yellowing of the lampshade, and it will look like new after long-term use, with better heat dissipation performance and longer service life Guarantees: ETL listed, quality and safety verified, 22.5 years LED bulb lifespan, 5 years warranty The specifications: Wattage: 36 watts Bulb Shape Size: A21 Bulb Base: E26 Voltage: ‎120 Volts (AC) Color Temperature: ‎5000/3000 Kelvin Luminous: ‎5500 Lumen Weight: 10.8 ounces Package Dimensions: ‎‎5.67 x 3.23 x 3.23 inches Bulb Features: ‎Not Dimmable What's the difference between SANSI LED bulbs which adopting SANSI Patented Ceramic Technology with other bulbs? What benefits can customers get from SANSI Patented Ceramic Technology? Potential major adverse effects of flicker identified in published research and/or Expert Opinion include these five factors:    Photoepilepsy or flashing-light induced seizure.  Stroboscopic effect and associated apparent slowing or stoppage of rotating machinery.  Migraine or severe paroxysmal headache often associated with nausea and visual disturbances.  Increased repetitive behavior among persons with autism.  Asthenopia, including eyestrain, fatigue, blurred vision, conventional headache, and decreased performance on sight-related tasks.   Abscrate from IEEE Std 1789-2015 How to Determine How Many Lumens You’ll Need to Properly Light Your Space?