Product Description Specification: Product Name: Half spiral energy saving lamp Powder: 5W, 8W, 12W, 15W, 18W Voltage: 220-240V, 50/60Hz, 100-130V, 50/60Hz Ra: 82-85 Real Wattage: 80%-85% Color Temperature: 2700K-6500K Lifespan: 8000hours Features: 1) High quality, energy saving, nice design 2) Suitable for office lighting and home lighting 3) Energy saving 4) Safe and easy to use 5) Protect eyes 6) Used for both inside and outside 7) Life span: 8, 000 hours 8) Color temperature: 2, 700K; 6, 500K; 4, 100K 9) Tube Dia: 7mm 10) Base: E27, B22, E14