G/E Halogen Searchlight Light Bulbs, 120V Medium, Bayonet, P28s 500W

Although most of these bulbs will have a visibility range of 1 to 2 miles, actual target illumination depends on many factors such as weather conditions, size and color of target, background, the color of the light source, characteristics of the reflector, supplied voltage, etc.
• Specifications and ranges provided are approximate and are offered only as a guide to compare bulbs
• Candlepower (or Candela) is a measure of light radiance at the source, and is provided for comparison purposes; how much of that light gets to your target will vary
• Lumens are a measure of illuminance of a target at a distance; a lumen is equivalent to 1 foot-candle of light per square foot of target; again, the values given in the table are relative