LED light bulbs are the modern lighting standard, combining the best of energy-efficiency, product life span, and quality of light. LED lights are designed to replace older technology, and can find use in nearly any application. These lights use less energy than other types and run cool to the touch. Because of their cost-effectiveness and long-life spans, they're typically recommended over their older counterparts.

Keystone's model KT-LED27HID-H-EX39-850-D light bulb uses 27W of power, with a brightness of 4100L lumens. It fits a EX39 base, and produces a daylight colored light. With typical use, it lasts about 50000 hours on average before requiring a replacement. This product is sold in multiples of 1. It comes with a standard manufacturer's warranty, and its UPC is 890949016206.