Features: 1. 100,000 hours rated lamp life. 2. Three years warranty on ballast, and five years warranty for lamps. 3. High quality die-casting aluminium housing is corrosion and vibration resistant. 4. Front opening for easy maintenance. 5. Operating Frequency: 250 KHz 6. Operating Temperature: -25¡æ to 50¡æ 7. 5000K standard color temperature, optional 2700K-6400K. 8. CRI>80 Ra 9. Flicker-free, instant start, stable light output. 10. IP 65 rating, WF1 anti-corrosion grade. 11. Power factor of 0.96 or greater. 12. Optional lamp covering include: tempered glass covers. Applications: Stadiums, workshops, warehouses,gymnasium, parking lots,Supermarkets,amusement parks, exhibition halls etc. Carton with polyfoam inside.