1. Lamp Source: NSL-DP (Ring) 2. Main Frequency: 230 KHz 3. Power: 40W/60W/80W/100W 4. Voltage: 110V/220V/90V-305V 5. Die-casting aluminum gear box + 1.2MM high-purity Aluminum reflector +Glass cover. 6. Power Factor > 0.99 7. Luminous Efficacy: 80Lm/W 8. Luminous Depreciation < 0.05 within 2000hrs 9. CCT: 2700K-6500K, CRI>85 10. Protection Grade: IP54 11. Net Weight: 5.5kg 12. Size: 400X400X310mm 13. Installation Height: 5-18M 14. Working temperature: -40℃~50℃ 15. Lifespan: 100,000hrs, 5 years guarantee 16. No flicker, no glare; Instant on and off