Feature specification: light source: helogen Feature specification:1) Work voltage: DC12V or DC 24V2) light source: helogen 3) PC Dome,electroplated with crystal with strong anti-impact ability and high transparency,non-distortion and un-fragile,hardness is over 4H,transparecy is over 9 grade and hard to color fade4) .Horizontally adjustable bracket,can be installed on the top of different cars