The Osram Sylvania 13W T5 Preheat Fluorescent Lamp is a cool white phosphor lamp with 4200K color temperature and 60 CRI (Color Rendering Index). It has an average rated life of 7500 hours with 3 hours/start.
Note:
The life ratings of fluorescent lamps are based on 3-hour burning cycles under specified conditions and with ballast meeting ANSI specifications. If burning cycle is increased, there will be a corresponding increase in the average hours of life.