The M1000BXU is a clear 1000w Metal Halide (MH) lamp made to EYE lighting's exacting standards. This lamp has a lumen output of 115,000 and a CRI (Colour Rendering Index) of 65. This means that it is rated as being 65% close to natural sunlight. This lamp has one of the highest CRI of any Metal Halide lamp on the market today. The M1000BXU is designed to burn in any position, and as with all Eye lamps it is made to last.