Model numbers: SEM-FL-18W Total power consumption: 18W (Equivalent to traditional 40W fluorescent lamp) Working voltage:AC110/50HZ, AC220/50HZ Light source: LED LED Qty : 60 pcs high power SMD white LED Color temperature:2800K-6500K Colour showing Index(Ra): 80 Light flux: Equivalent to traditional 40W traditional fluorescent lamp Length: 120CM tube material: glass Weight: 450G Application temperature: -30   - 60 centigrade Life span: 50000 hours LED fluorescent lamp Features: No flicker,reduce eye fatigue