Features: Waterproof, Heatproof, Shockproof, Anti-Electronic Interference and Constant Power Output Best use for big vehicle such as truck, tractor, bus,trailer, offroad, , 4WD, big automotive, engineering use. Not suitable for car, motorcycle. Specification: Housing color: black Material: aluminum shell Input Voltage Range: 9-18V DC Normal input Voltage: 12V DC Output Voltage: AC Max. start voltage: 23KV Cool staring current: less than 10A MAX Normal input current: . 8.5 A Output Power: 100W ( A theoretical Max. rated wattage) Output Voltage: 70-140V AC True RMS Square Wave Operating Temperature: -40 to +105 degree Efficiency: 87% With input 13.2V DC Condition Package Contents: 1 * ballast 1 * box Only 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.