Main Features: 1. Long lifetime: over 50,000 hours, saving 50% more than general energy saving lamps. 2. High-brightness, high-luminous efficiency, 3. low-power consumption, energy-saving 4. Resistant to dampness, low-heating and frequent switching with strong resistance to violation, reliable shock-proof 5. Smart, light, quick to start 6. High-light-emitting frequency: 50 to 60kHz with no flickering, soft and eye-protection 7. Environmental protection: small amount of mercury contained and carbon-reduced 8. Easy for assembly 9. Its length, shape, tube diameter and color can be easily devised according to customers varied requirements. 10. Guarantee period: 3 years. Power: 20W (replacement of general 40W energy saving lamp) Color rendering index: 85 to 90Ra Operating voltage: 180 to 240V Lifetime: above 50,000 hours Light flux: 1540lm Color temperature: 2,700/4,500/6,400K Guarantee Period: 3years.