80% Energy Saving Bulbs: 2 x 135W CFL E27 softbox bulbs save 80% energy compared to traditional bulbs, providing 5 times more illumination. The 5500K daylight CFL creates a brighter photography environment with the same power output. 135W Professional Photography Lamp: The CFL lamp maintains a stable 5500K color temperature, offering bright, flicker-free light that closely mimics daylight with a soft tone for more realistic photos. Perfect for portrait and product photography. Standard E27 Socket: These 135W photo studio bulbs are compatible with other E27-based photography softboxes, umbrella light kits, and studio lighting sets. They install quickly and securely. Each 135W bulb measures 22.5 cm in length and 8 cm in diameter. 10,000 Hour Lifespan: Reliable internal circuitry and a heat dissipation hole design with low heat generation reduce power consumption. Eco-friendly and durable, these bulbs are suitable for long-term photography with a lifespan of up to 10,000 hours. Maintenance Quality: Features an internal foam casing to prevent damage during transport. The studio light body surface is treated with high-temperature powder coating for low temperature, strong adhesion, and corrosion resistance.