Recessed downlight bulb with medium (E26) base. Brightness: 540-Lumens. Life: 22.8-years (based on 3-hours/day). Light appearance: 2700K (soft white). Energy used: 6.6-Watt (equivalent to a 45W standard incandescent light bulb). Uses up to 85% less energy compared to a standard incandescent light bulb. Lumens per watt: 81. Input line voltage: 120-Volt. Ideal for lighting in 4 in. recessed cans. Full range dimming with even light distribution. Mercury free. Instant on to full brightness. California Energy Commission (CEC) Title 20 and Title 24 compliant. No ultraviolet light, safe for artwork. UL listed. Pack of 2-light bulbs.