Applicable Car Models: Applicable to BMW 3 series/4 series with NBT system; please refer to the picture description for the specific model year. The NBT system has the following features: for BMW Connected Drive function. The iDrive control has a touch pad function. 6 Pin LVDS port at the rear of the unit. 4GB+64GB: Android 11 car stereo system, enjoy faster running with 4GB RAM & Octa Core CPU, 64GB ROM for more APPs installed GPS Navigation & WiFi Connect: Built-in Offline Map of North America. Online map also be supported, after connected to WiFi, you can use GPS Navigation at anywhere. The Original Information: 1-Keep Work Original System,2-Keep Original CD Player,3-Support Original Speaker,4-Compatibie idrive Control. Compatible Features: Wireless CarPlay, Android Auto, GPS, 4K Video, Screen Mirroring, Backup Camera, WiFi, USB, DVR, OBD, TPMS, DAB, Steering Wheel Control, Bluetooth, Microphone, Phone book search, Split-Screen Mode, CarPlay (NO Need the extra carplay dongle).