GE 97638 C156/M156 20W MR16 HID GX10 CMH20MR16/830/WFL Wide Flood Metal Halide HID Bulbs produce high output for their size making them a compact powerful &amp; efficient light source HID Bulbs are used for general lighting, professional lighting fixtures, growing applications HID bulbs put out around 3-5 times greater output (lumens per watt) than traditional halogen bulbs GE MR16 bulb, 20W, Wide Flood WFL Base: GX10, Rated Life (hours): 12000, Color Temp: 3000K, Luminous Flux (LM): 1000