GE 22124 - CMH70/C/U/830/MED 70 watt Metal Halide Light Bulb 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 BD17 bulb, 70W, Base: E26 Medium Screw, Rated Life (hours): 15000, Color Temp: 3000K, Luminous Flux (LM):