... dimmable 10w cob led downlight 10w 1,Material:Aluminum,car/die-casting aluminum lamp body,the surface oxidation 2,Light source:all use ... dissipation,light decay less,live longer2,Brand LED cold light source,no radiation,no heavy metal pollution,performance, olor pure, ... (commonly known as transformer): Transformer determines the life of lamp,lamp beads with more than 50000hrs no problem,but if the ...