MR16 LED Bulb 12V, equivalent to 35W 50W mr16 halogen bulbs.Standard GU5.3 led bulbs shape bipin base, perfect replacement bulbs for track lighting, recessed lighting.Average rated life of GU5.3 MR16 LED bulbs is 30,000 hours.The MR16 12V 50W led can be used as outdoor landscape light bulbs, track light bulbs, spot light bulbs.This led MR16 bulb can only work at AC/DC 12V, so a LED transformer is needed while using.