1. Up-grade the quality of lighting, High efficiency :80LM/W 2. Super long-life, upto 60000 hours. 3. Working environment temp: -20 ~ 50 c 4. Color temp:2000 ~ 6500k 5.Voltage: AC 160 - 265v 59hz 6. environmental protection, no mercury liquid 7. Start time: Less than 0.5 sec, could restart again immediately 8. Easy to install, seldom maintenance