1) built-in ballast. 2) H1,35W/55W xenon bulb.the energy consumption reduced by 50% than general,3 times brightness than the halogen lamp. 3) aluminized optical glass, tempered glass. 4) voltage of 12V and 24V. 5) illumination distance of 800 meters. 6) a simple second-line installation. 7) bracket shockproof effect, suitable for off-road lights lighting. Specifications: 185X145X250MM 8) light type: floodlight/spot beam