1. Power: 18W, 36W, 54W;
2. Equal to common halogen lamp: 180 W, 230 W, 300 W;
3.  Working Voltage: 85-265 V;
4. Color Temperature: 2700-6500K;
5.  Luminous Flux:   1620-1800 lm  (18W)
                                     2100-2350 lm  (36W)
                                     2600-2900 lm  (54W)
6. Working Temperature: -30℃ ~+ 55℃
7.  Viewing Angle: 15 /30 / 45 / 60 deg.
8. Lifespan: ≥50,000 hrs
9. Color Rendering Index: Ra>75%
10. Power Factor: ≥ 0.85
11. Product Dimension: Φ230*138mm  (18W)
                                              Φ230*158mm   (36W)
                                              Φ230*158mm  (54W)
12.  Material:  Aluminum + Glass