please visit to view more info about our lamps. Technical Features Assembled by SMT manufacturing process with chip type electronic components. Rated voltage: 220-240V/50Hz or 110-130V/60Hz Rated wattage: 5W/7W/9W/11W(+5%/-10%) Power Factor: around 0.6 Lamp Base: B22d/E14/E26/E27 (E14 is only available for 220-240V models) Average life span: 6,000hrs Color Rendering Index (Ra): >80 Color Temperature: 2700K/4200K/6200K/Red/Green/Blue Not dimmable Specifications: Model Rated W. (watts) Average Lumens (lm) LengthxDia. (mm) G.W. (kg) N.W. (kg) Qty/Ctn. (pc) Carton Size (cm) Qty of 20' FCL (pc) SLB 5W 5 W 180 115x?0 7 6 50 38x38x34.6 25,000 SLB 7W 7 W 280 122x?0 8 7 50 38x38x34.6 25,000 SLB 9W 9 W 350 132x?0 8.5 7.5 50 38x38x34.6 25,000 SLB11W 11 W 450 142x?6 9 8 50 38x38x34.6 25,000