The Mercedes-Benz OEM  Full Retrofit Kit for W253 2015-2018 To 2020-2021 is a comprehensive upgrade package that transforms the interior of the Mercedes Benz vehicle, providing a premium look and feel. The kit includes brand new genuine OEM parts as follow:
1-Touch Radio Display.
2-Digital Cluster 
3- Head Unit NTG 6 .
4- Premium touch pad .
5- USB interface With CarPlay Support  .
6-IC Adaptor
7-Retrofit adaptor cable Convert form HU5 , HU5.5 to HU6
8-Steering Wheel  Retrofit adaptor
The retrofit kit is designed to provide a upgrade GLC W253 years 2015-2018 into 2020-2021