When selecting an LED bulb, several key factors must be considered. Equivalent Wattage is one such factor - it refers to how much energy is needed to produce the same amount of light as, for instance, an incandescent, fluorescent, or HID lamp. Generally, LED wattage is 1/4 or 1/5 of what incandescent lamps require. Additionally, LED lumens (a measure of brightness) can range from 50-100 lumens below or above what a 60-watt incandescent bulb produces. Finally, LED color temperature (how the light appears) is a factor - for example, 2700K-3000K produces a warm white hue, while 5000K emulates natural daylight.