Metal halide lampHPI range: 1) Type: HPI-MH250W, HPI-MH400W 2) Wattage: 250 / 400W 3) Color temperature: 4300 / 4500 4) Lamp voltage: 125 / 128 5) Lamp amperes: 2.15 / 3.40 6) Luminous flux: 19000 / 35000 7) CRI: 65 8) Average life: 12,000hrs 9) Base: E40 10) Bulb: tubular Features: 1) High lumen output 2) Long life 3) Excellent color rendering 4) No ultraviolet radiation 5) Less color temperature shift 6) Applications: lighting of supermarkets, airports, hotels, roads, city landscapes and flood lighting