Faceted C7 bulbs are Christmas light bulbs with a textured, crystal-like surface, designed to enhance light dispersion and create a sparkly effect. These bulbs are often used for outlining buildings, wrapping trees, or creating festive lighting displays. They are popular for both indoor and outdoor use due to their weather resistance and ability to distribute light effectively.

Smooth filament C7 bulbs are LED replacement bulbs for traditional incandescent C7 Christmas lights. Unlike faceted or textured bulbs, these have a smooth, often glass-like exterior, providing a consistent, even light distribution. They utilize LED filaments, offering energy efficiency, longer lifespan, and reduced heat output compared to traditional incandescent bulbs. These bulbs are designed to fit standard C7 (E12) sockets and are commonly used for outlining buildings, decorating trees, and for indoor and outdoor holiday lighting displays.