Philips Advance, ANSI Code: M59, Lamp Type: MH, MICROFARAD: 24 MFD, Number Of Lamps: 1, BALLAST TYPE: Magnetic HID, Voltage Rating: 120/277/347 V, Wattage: 400 WTT, ANSI CODE: M59 OR H33, Lamp Starting Method: PROBE, Not covered coil,"WER FACTOR: HIGH