... · Color Temperature : 2700k, 3500K, 4100K, 5000K, 6500K.· Working Temperature : -35~50°C( anytime starting immediately)· Power Factor >0.98, CRI>80 ... ,000 HoursLamp Operating TemperatureLower, <80°F Reduces A/C costHigher, >300° F Increased A/C costHigher, >350° F Increased A/C costCRI>80 (Ra)65~80 ...