A Casell 40 Watt Daylight Corn Lamp. This model has been designed with an Edison Screw (ES/E27) base-type for ease of installation alongside a 360 Degree illumination structure. Using just 40 Watts of power this lamp provides a crisp bright Daylight White (6500K) light output at the equivalent output of a traditional 100 Watt halogen bulb. With a 50000 Hour lifespan guaranteed by the manufacturer this is a highly durable and efficient model which will stand the test of time.