Product specifications: 100%!High Qualiy LED Source: High power CREE LED Chips LED Power:4W Power consumption: 10.5-11.5W Input voltages: 110v-220V Base:GU5.3 can fir into MR16 socket Material of shell:Aluminum Alloy Size:50mm x55mm(W*H) Weight:60g Color temperature: Clod white 5500-7000K                                      Warm White 2700-3500K Beam angle: 30 Angle .45 Angle .60 Angle. Lumens:560-600Lm (approx) Reflctor efficiency:90% Body temperature:<60 Degree Celsius LED work temperature:0-65 Degrees Celius Equivalent to 50-60W Halogen Bulb Approvals: CE, RoHS,CCC, FCC certificate Shape: Round Average rated lifespan: 10,0000 hours under normal usage