1.Watts: 70W /100W/150W/175W/250W/400W/1000W;2. High luminous efficacy, average of 100 lm/W;3. Excellent color rendering, Ra>=65; 4.Wider range of color temperature 3000-20,000k; 5. Excellent maintenance, long life; 6. Comfortable lighting;7.Bulb : ED shape.Better appearance, with CE,UL and ISO 9001:2000 certificates.