... high quality and low price Long life 2),Easy installation 3),Steady 4),Security1)short circuit protection2)low/high voltage protection3)anti-electronic ... jamming4)waterproof and vibration proof5)CPU control7)energy saving8)high safetyOur ballast will compatible with ... in cars is: H1,H4,H7,9005,9006,9007 High quality slim ballast