This T5 Circular Fluorescent Tube is rated at 22 Watts and emits a bright Daylight 6500K colour temperature. This energy efficient lamp offers excellent colour rendering and stable light output together with an impressive 10,000 hour lamp life. Circular tubes are ideally suited to shallow ceiling and wall mounted fixtures in commercial and domestic applications. The Daylight colour of this lamp is particularly suitable for applications where daylight simulation is required or necessary. This product is a tube only and requires control gear to operate.