Life (Hours): 1000. Light Output (Lumens): 580-1580-2130. Energy Used (Watts): 50-100-150. Soft, bright light that is ideal for reading and tasks. To save energy costs, find the bulbs with the light output you need, then choose the one with the lowest watts. The soft, bright light from the Reader/Task Bulb is ideal for: Reading and studying; Homework; Crocheting; Needlework; Stitching; Embroidery; Knitting; Hobby work. Special features make the Reader/Task Bulb the best option: Powerful high wattage filament provides a bright level of light output; Special frosted diffusion system breaks up the light, making it softer; Large bulbs size helps spread the light over a broader surface. SA Listed.