Designed to Fit Standard U.S. Lamps and Light Fixtures</br>640 to 660nm Range</br>LED's are Closely-Set</br>Two Year Average Life</br>38 Premium High Intensity LEDs</br></br>Product Description</br></br>The RubyLux All Red LED Bulb is comprised of 38 premium intensity light emitting diodes (LED's) operating in the range of 640 to 660nm. This bulb is approximately 1.75 inches in diameter and 2.5 inches tall?? making it fit easily into most lamps or light fixtures. What makes the RubyL