GU10 LED Bulb 4.9W 790lm Neutral White 4000K Energy Saving LED Bulb 10 Pack
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.