Question: is mr16 same as g4?
Answer: What's the difference between G4 and MR. ... MR16 lamp cup is a multi-reflecting surface, for halogen replacement LED spotlights, we also used to call it is MR16, E27, E14, GU10 lamp holder with respect to said, as the two-pinthe distance between the 5.3 lamp holder, so some people call it G5.