[Effective and stable electrical properties]Operating voltage range between 11V~30V. Pair 32pcs 5 watts high lumens led chips can output 18800LM. Use premium high temperature resistance electronics elements to form high usage circuit, include IC, capacitance and inductance etc. reduce heat generation to make the light bar??s lifespan more than 50,000 hours. Meet EMC anti-interference standard. The lights can work normally between -40 degree Celsius ~ 150 degree Celsius.[Efficient lighting effect]Each light cup is combined with spot and flood beam design. Spot beam travels quite far out and has a nice width. The offroad light emits super bright light. Give safe view in most of bad weathers like rainy days, foggy days and snowy days, make driving safer.[Premium combination of materials]High thermal conductivity PCB board, high strength ADC12 aluminum housing, it can conduct heat quickly. Housing surface is deal with salt fog-proof, 316 stainless steel screws is anti-rust and more durable.