The GY GU10 4.9W bulb produces low heat when working and the body of the lamp does not get as hot as other bulbs. Whereas a normal Class E GU10 LED 5W can only achieve 500LM, a GY GU10 4.9W bulb can achieve 790LM, which is equivalent to the luminous flux of a normal Class E 8W bulb, saving energy while being brighter.
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