Neewer&reg; 35W 110V 5500K Tri-phosphor Spiral CFL Daylight Balanced Light Bulb in E27 Socket for Photo and Video Studio Lighting(2 Pack) This Neewer 35W 5500K CFL bulb is use up to 80% less energy and would be a great addition to your studio. It is energy saving,eco-friendly and long service life. E27 scoket fit most standard photo fixtures,perfect for digital camera photography 5500K color temperature provides bright enviroment for taking product photo Notes:Bulb ONLY.Don't include other items.