HID Bulbs produce high output for their size making them a compact powerful & 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 PAR38 Flood Base: E26 Medium Screw CMH70/PAR38FL/ECO 3000K Color Temp, 70 watts, 4800 lumens