With a lifespan of 15,000 hours, the bulb will last for over 13 years (based on 3 hours of use per day) With a color temperature of 2,700 kelvin, the bulb provides a warm white light, creating a welcoming atmosphere in any room. Consuming 5 Watts of energy and costing only 1.32 per year to use, this bulb saves up to 86% per year and 113.86 on its lifetime compared to an equivalent incandescent bulb (based on 3 hours of use per day, 0.22/kWh; may vary according to rates and use) The excellent color rendering index (CRI andgt; 80) provides a vivid and natural color; 270 degree beam angle for wide illumination Non-dimmable bulb, not dimmable Specification: Size: 50*99MM Quantity: 4 pieces