After installation guide Unit specifications Application models: Compatible for BMW E46 3 Series 1999-2004 (1999 BMW M3, 328is, 328i, 323ti, 323is, 323i, 318ti, 318is, 318i / 2000 BMW 328i, 328Ci, 323ti, 323i, 323Ci / 2001 BMW M3, 330xi, 330i, 330Ci, 325xi, 325i, 325Ci, 323i, 320i / 2002-2004 BMW M3, 330xi, 330i, 330Ci, 325xi, 325i, 325Ci, 320i) System OS: Android 13.0 systemCPU & Internal storage: Quad-core ARM Cortex-A53 2.0GHz, RAM Memory: 4GB, ROM: 64GBScreen: 9 inch IPS Capacitive HD touch screen, Resolution: 1280*720 pixelBluetooth: v5.0, support hand-free calling and play music,also phonebook download and search,calling recordsWIFI: Support 2.4GHz and 3G/4G Network, Wifi Share Mobile Phone HotspotRadio: FM/AM, RDS, DAB/DAB+(optional)Surround Stereo out: 4*50WFrequency Range: FM:87.5-107.9Mhz, AM:530-1710KhzMusic Format: MP3、WMA、AAC、RM、LFAC...All FormatVideo Format: MPEG-1/2/4、H264、H263、VC1、RV、RMVB、DIVX、VP8、AVS Steam...All Format Main features Wireless Carplay Pre-installed is an application named 'Zlink,' which allows users to directly connect wirelessly to Apple CarPlay and Android Auto (It does not support wired connections). Save your money by not having to purchase a separate CarPlay dongle. Pre-installed DSP+ DSP chip is built-in. It is pre-installed with advanced DSP software, providing more sound effect adjustment functions, including six factory preset settings for the EQ: Flat, Pop, Standard, Rock, Classic, and Jazz. It also features a 32-band equalizer with frequencies ranging from 30Hz to 17kHz and Sound Field control. Support Wifi Hotspot Share You can connect to the internet using the mobile network, allowing you to access various apps anytime through the Play Store, making the head unit an all-in-one solution. Google Maps is pre-installed for instant online navigation, and users can also download other free navigation software from the Play Store. Please note that an SD card will not be included in the package. Bluetooth Pair The Bluetooth function allows users to download their phonebook from their mobile phone to the head unit. Our accessory kit also includes a microphone, enabling users to stay in touch with friends, family, and clients while driving. Additionally, Bluetooth streaming can be used to play music simultaneously. The built-in DSP module enhances the music quality for a better listening experience. Please note that our Bluetooth feature only supports mobile devices and OBD2. Support Factory Steering Wheel Control There is an original car steering wheel control learning application, which supported car models allow learning of the original car steering wheel control. Reversing Camera The Amaseaudio car stereo supports RCA type reverse camera input, allowing for synchronous display of the rear screen while reversing the car. Please note that the rear camera is included in this package. FM/AM Radio The default frequency of the AM/FM radio is set to the US, providing clear sound quality and ensuring reliable signal reception. Whether driving on rainy days or highways, you won't encounter any issues. You can enjoy real-time radio, music, weather forecasts, topic sharing, and news to make your driving experience more enjoyable and entertaining! High-resolution video We have adopted a high-quality A+ grade TFT touchscreen, equipped with a 1280*720 high-resolution display that supports 1080P HD movies. You can enjoy HD video playback anytime, making your driving trip more enjoyable and fun. On-Board Diagnostics This unit comes pre-installed with a diagnostics app called 'Torque,' allowing you to directly monitor your car's Engine Control Unit (ECU) and retrieve various information from the sensors. Main functions include: Dynamometer, horsepower, and torque gauges0-60mph (0-100 kmph) speed timingsCO2 emission readoutsExtensive fault code database from various manufacturersAlarms and warningsMileage (miles per gallon) information Please note: To use this function, you will need to separately purchase an external OBD2 scanner.