The interior of these products is unique because they are all made with Cree LED chips (Made in the USA) which allow for low forward voltage, low heat generation, long life and high ESD tolerance and resistance. The PCBA (Printed Circuit Board Assembly) is engineered with unique temperature protection, voltage protection and current protection designs to maximize efficiency and increase durability. This unique design means no electromagnetic interference with other nearby electronics on your vehicle. Outdoor Dupont painting coats the housing guaranteeing the housing will remain unchanged for 5 years. Technical Specifications: Size: 30" Beam Type: Combination Dimensions:41.5" x 3.5" x 3.3" # of LED's: 80 # of LED Rows: 2 Operating temperature: -40 to 145 degrees Wattage: 400w Operating Voltage: 10-30V DC Amp Draw: 16.5A Lumens: 34,240lm IP Rating: IP69 Life Span: 50,000 hours Housing color: White Overall Height when mounted: 4.2"