1.Support Mercedes-Benz W204, W207, W212 with ELV models
2.Compatible with mainstream MB devices on the market
3.Can simulate the original car ELV pronunciation
4.It supports one-click erasing and can be used multiple times
5.It can be installed in the ELV position on the car, does not leak, does not hang outside, does not affect the appearance, and is more stable and safe.