Builtin high pressure bag for fast startup & safe stability Aluminum shell for better heat dissipation and vibration resistance performance Treated with adhesive glue irrigation for better waterproof & shockproof performance Easy installation,just plug and play without any program or code 6 protections against overpressure,low pressure,overheating,no-load,short circuit,reverse connection for more safety and durability Type: Car Headlight Programmable Control Unit Module Ballast Condition: Fitment:Direct Replacement Power: 35W Waterproof rate: IP 68 Operation voltage:DC 12V Placement on Vehicle:Left Side Part Number: A2139002616, A2229000515 A213 900 26 16 Interchange Part Number:A 222 900 05 15 A 213 900 26 16 Fitment: For C-Class W205 S205 2014-2021 Color: black+silver Material: ABS+Metal Package Contents: 1 x Headlight Control Unit Only 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.