Operating voltage:10-30 v dcIncluding rated power and actual power led light.The rated power is calculated theoretically based on the lamp voltage and current.But for practical applications the current can not be a full loaded operation and some power dissipation.Led does not mean that there is gain because it can be driven at full capacity.Operating the LED at full power produces a high temperature with reduced life.Led balance between wattage and light;Other components,such as heat sinks,allow for maximum operating efficiency and light output and can extend their life.Applications:Off-road vehicles,ATVs,trucks,engineering vehicles(excavators,treedozers,road rollers,bulldozers, and mining trucks),special vehicles(fire trucks,police vehicles,rescue vehicles,Boats,buses and tanks.Work\/spot\/day\/fog lamp,auxiliary lamp,suvs available for bumper,fire engine,ambulance and automobile,Indoor and outdoor use,Backlight,Off-road lighting,Truck,trailer interior and exterior lighting,Architectural lighting,Garden,backyard lighting,Boat lightingColour:Black material:metalProduct size:15*9*8CMWaterproof ratio:ip 67Color temperature:6000 k(pure white)Rated power 30 w;Actual power 12 W.Actual power is lower than rated power.Package Contents:2 x Car lightsOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +\/- 1-3cm.