LED Bulb MR16 Spotlight 12V 4W 4X1W 440lm 3200K Warm White 45 Degree Beam angle Narrow Light Lighting Spot 90% more efficient than incandescent and halogen LED Last up to 50,000 hours Shock proof bulb (the bulb will continue working even after a shock to the bulb) Mercury free/environmentally friendly, no UV emissions and low surface temperature (only generate limited heat!) Replacement Bulb for standard 12V Halogen spotlight Warm white (3200K) 45 Degree beam angle