Builtin high pressure bag for fast startup & safe stabilityAluminum shell for better heat dissipation and vibration resistance performanceTreated with adhesive glue irrigation for better waterproof & shockproof performanceEasy installation,just plug and play without any program or code6 protections against overpressure,low pressure,overheating,no-load,short circuit,reverse connection for more safety and durabilityType: Car Headlight Programmable Control Unit Module BallastCondition: Fitment:Direct ReplacementPower: 35WWaterproof rate: IP 68Operation voltage:DC 12VPlacement on Vehicle:Left SidePart Number: A2139002616, A2229000515 A213 900 26 16Interchange Part Number:A 222 900 05 15 A 213 900 26 16Fitment: For C-Class W205 S205 2014-2021Color: black+silverMaterial: plastic+metalPackage Contents:1 x Headlight Control UnitOnly the above package content, other products are not included.Note: Light reflection 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.