MR11 LED Bulb Product Details Excellent replacement for standard 12V 35W MR11 Halogen bulbs with 3W 250lm high-brightness. MR11 Diameter 35mm* Height 38mm (1.38×1.49 inch) with GU4.0 base.BUT not suitable for MR16 LED bulb two-pin base(diameter 50mm). 12V AC/DC MR11 lamp is compatible with 99.8% of the electronic transformers. 2700 Kelvin, warmer yellow light. Close to the color of the yellow halogen lamps. Suitable for living room, cabinet and kitchen. Comes in 3W only in warm white “3000K” or cool white “6000K”. Warm White Cool White