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LEDs themselves last a very long time. Most of the size of the bulb it taken up with heat sinks and controlling electronics. Unfortunatly its the associated electronics in the light bulbs that fail.
Jewllers use LED bulbs in their shop windows because of the brightness and colour of the lights, and because it saves them a fortune in leccy bills. They usually et given the bulbs free by the Jewellry manufacturers who want their goods sold inthe best light. The more bling the more items sold.
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