This Spectrum Series™ LED XL50®, features a warm white beam. Warm white light is the ideal light source for working in tight spaces. - Preferred light for electronic technicians because warm white LEDs allow for the full color spectrum to be seen in detail on wires/cables. Cool white Light LEDs make browns, blacks and reds look the same, warm White LEDs do not mask color. - For situations in which a flashlight is going to be used for an extended period of time, warm white LEDs avoid eye strain because it is a natural light similar to the sun’s ray unlike regular white LEDs.