BLUEFIRE 6 Watts A19 LED Light Bulbs, Warm White 2700K, 520 Lumens, Flickering-Free Light, 40W Replacement - 4PCS Value Pack, Best for Bathroom Vanity Lighting with Low Energy Use Saves 88% in energy costs compared to a 50-Watt incandescent bulb, 50% compared to a 12W CFL bulb, or 33% compared to a 9-Watt LED bulb It pays for itself in less than 1 year of usage (see below Return on Investment Calculation*) Guarantee no buzzing noise (a noticable difference compared to other brands) Instant ON; no warm-up time. Mercury-free; environmental-friendly! Traditional Edison bulb shape features a wide beam angle for a broader area of illumination.