Philips Lighting 429950 ED17P Protected Metal Halide Lamp 70 Watt E26 Medium Base 4960 Lumens 90 CRI 4000K Cool White MasterColor CDM Elite 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 Philips ED17 bulb, 70W, Base: E26 Medium Screw, Rated Life (hours): 20000, Color Temp: 4000K, Luminous Flux (LM): 6200