Heat-sink:Aluminum LensAngle:>180Degree saving 80% than the ordinary lamp. Spec: 1.Model:MR16,GU10,E27 2.Input voltage: 12V ... : 2,700 to 3,300K 11.LED driver mode: built-in constant current mode 12.Shell: profile 13.Beam angle: 30 ... : (ordinary incandescent, halogen 10 times) 3.Nice: (LED lamp bead crystal-clear profit, installed in the home, shop, do not turn on the ...