... high luminous efficiency, long life. Product featuresThe American original CREE light source, die casting aluminum alloy material, With high luminous ... IP50 / Ⅱ classColor temperature: warm white 2700 ~ 3500 k; Neutral white 3800 ~ 4800 k; Cold white 5500 ~ 6500 k; According to ... or operation, otherwise will strike the bad LED.Shell color: silver, black, white, aureate, champagne and so on many ...