... 1.Magnetic ballast for HID Lamps(HPS/MH/HM) 2.Watt:70W-400W ... (high-pressure sodium)discharge lamp HI/MH (high-pressure metal halide)discharge lamp HM (high-pressure mercury ... vapour)discharge lampShape(H*W):53mm*66mmtw:130Description:1.Wattage:HPS/MH35W, HPS50W, HPS/MH70W, HM80W, HPS100W, HM125W, HPS ... Same Mode Series 70W/150W/250W/400W: MH metal halide lamp 250w ballast