Metal Halide Lamps: High Luminous efficiency, long life; All lamps are fully CE, ROHS complaint; Hard glass bulb; Type: BT-Metal HalideBase: E40Voltage: 110-130/220-240VWatt: 175W, 250W, and 400WDiameter Of Lamp: 91x230mm/122x290mmDescription Color: Color Temperature:4300KLife: 10000Hours 250W Metal Halide Lamps with BT Shape