hid kit 1, High quality 2, Pretty competitive price 3, Fast delivery ... Lack of voltage protection test5, Over voltage protection test6, Flash light concussion test7, Quakeproof capability test8, Cold, warm ... Polarity protection test10,EMC anti-jamming testHID advantage:1,High brightness: three times lumunous flux as that of ... day5, Extended warranty can be negotiated High quality and low price hid kit