Bright & Energy-Saving: The VEVOR 13W CFL light bulbs feature a GU24 base, 900lm luminous flux and 2700K warm color temperature, providing comfortable, soft lighting while saving 80% energy compared to standard incandescent bulbs. (Working Voltage: AC 100-130V 60Hz) Soft Warm Light: The 4-pack compact fluorescent spiral light bulbs provide a 2700K color temperature and a >80 color rendering index, emitting soft, warm, uniform, comfortable, and glare-free lighting that creates a cozy atmosphere High-Quality Material: Our 2-prong light bulbs feature high-quality glass spiral tubes that offers excellent light transmission, providing clear and bright illumination. And the PBT flame-retardant base helps reduce fire risk, ensuring safer use Easy to Install: Each light bulb weighs just 0.2kg (0.44lbs) with compact dimensions, making installation a breeze. Simply align the socket, twist, and lock securely for quick assembly