Transtec Backup CDL LED Bulb is an energy-efficient LED bulb that provides bright and clear light. It has a screw base and consumes only 12 watts of power. This bulb can be used as a backup bulb in case of power outages or as a regular bulb in your home or office. It has a long lifespan and is easy to install. The bulb emits a cool daylight (CDL) color temperature, which is ideal for reading, working, and other activities that require bright lighting.