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Emitters change mid-production. A light that shipped with one LED in spring is sold with another by autumn under the same model name, and the published output and tint move with it while the old spec sheet stays up. Across 314 lights from 32 brands, that is the single most common reason a row here goes stale.

If what arrived in your hand does not match what this page says — or if you have measured a runtime to cutoff and got something else entirely — that is worth writing down.