Features: brand new and high quality Activate by OBD2 plug and for play, Easy to use. Connect mobile phone with car only via cable. Just need insert to obd port than active 1 minute to work. Support Apple-carplay and Androidauto.(android-auto only support car firmware version from 2016.9) Original Protocol Communication , not effect dealer-warranty. For Mercedes-NTG5.1 via OBD2. Unlimited use. Specifications: Material:ABS Size:Approx.5x10.5cm/1.96x4.13inches Color:Blue Voltage: 12 (V) Working temperature: 56 (℃) Applicable models: many models Package Includes: 1x Activation Tool note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.