T8 solid-state LED (light emitting diode) tube light bulb with medium bi-pin base and ColorQuick technology. Linear LED ballast bypass T8 series for double or single-ended wiring. Works with existing sockets-shunted or non-shunted. No ballast or external driver required. Adjustable color temperature 4000K Cool White, 5000K Bright White or 6500K Day Light using switch on end of the tube. Built-in shock-resistant circuit (not hot until both ends are installed). Features include high efficacy, 50,000-hour long life, all glass tube, and 220-degree beam spread. 90 CRI (color rendering index). Operating temperature: -20 degrees Celsius (-4 degrees Fahrenheit) to 45 degrees Celsius (113 degrees Fahrenheit). Box includes (2) tube light bulbs. cULus damp location rated. 5-year limited warranty. Lawful for sale in California.