●One: compatible models: suitable for Mercedes e Class W213 2016 2017 2018 2019 2020 2021 2022 ●Two: product material: the base is plastic, the bracket is plastic + aluminum alloy ●Third Product Features The base was developed with the original vehicle data that only applies to this model ●Four: installation method: fixed base, buckle design and then connect the bracket, the screws need to be tightened to avoid the bracket wobbling ●Five: Applicable mobile phone size: suitable for 4-7 inch mobile phone size