... 3.FR4 PCB,21leds 5050SMD 4,IP44,>=50000h gu10 21pcs smd 5050 led lamp:1. Base type: GU10,MR16,E27,E14 are ... : Cool white, warm white, white, red, blue, green and yellow4. Led light source: TW Epistar5. Luminous flux: 70-80 lumens/watt ... internal copper heat conductor and external aluminumhousing8. Brightness degradation: 3% - 5%1kh9. Lifespan: more than 50000 hours10. Body temperature: less than ...