Apollo Studio&reg; 60 Watt CFL Compact Fluorescent Light Bulb - Color Spectrum 5500K Package Includes: 1 - Apollo Studio 60W 5500K Day Light Full Spectrum CFL Compact Fluorescent Bulb for Photography / Dimensions: Diameter - 3, Length - 9.25 / 120V / 60Hz FULL SPECTRUM LIGHTING BULB: 60-watt CFL bulb for photography with a 6500K color temperature for a daylight balanced, pure white light. Great for photo studio and video lighting. COMPACT FLUORESCENT: CFL light bulbs are energy saving and energy efficient, consuming as much as 75% less electricity than most other bulb types. These day light bulbs have a longer life span than incandescent bulbs yet can produce just as much light. E26 SOCKET: Spiral-shaped bulb with standard E26 socket for quick and simple installation. QUALITY CUSTOMER CARE: Apollo Studios CFL Light Bulbs for Photography are backed by the Apollo Studios brand guarantee. Customer satisfaction is our priority and our dedicated customer service team is here to help. If our product does not meet or exceed your expectations, we offer a 30-day money back guarantee hassle free.