Often used for accent lighting and track lighting. It also serves as replacement bulbs for certain fiber optic Christmas tree. This light bulb provides a narrow spotlight with a 30 beam angle. There is no mercury content and it is instant on! Eco-friendly and Energy Saving: This halogen light bulb takes 20W, giving 220 lumens of light. Assuming an average of 3 hours of daily operation and average cost of 11 per kW, the yearly energy cost is $2.4. High-Performance Quality and Excellent Light Color: The light temperature is 2700K, which gives very nice warm white yellowish color for superb ambiance. The color rendering index (CRI) is 100 comparing to low CRI LEDs so the quality of light is excellent. This halogen light is CE and RoHS certified to ensure high quality. Up to 2,000 hours of lifespan, which is 1.8 years with 3 hours of average daily use.