1. Introduction
This manual provides detailed instructions for the installation, operation, and maintenance of your Sellrich Android 15 Double Din Car Radio Stereo. Please read this manual thoroughly before using the product to ensure proper function and safety. Keep this manual for future reference.

Image: Sellrich Android 15 Double Din Car Radio Stereo main unit with feature icons.
2. Safety Information
- Do not operate the device in a way that distracts you from driving. Always prioritize road safety.
- Ensure all wiring is correctly connected to prevent short circuits or damage. Consult a professional for installation if unsure.
- Avoid exposing the unit to extreme temperatures, direct sunlight for prolonged periods, or excessive moisture.
- Do not attempt to disassemble or modify the unit. This may void the warranty and cause damage.
- Keep the volume at a reasonable level to remain aware of external traffic sounds.
3. Package Contents
Verify that all items listed below are included in your package:
- Double Din Car Radio Stereo
- Power Cable
- USB Cable
- GPS Antenna
- Rear View Camera
- External Microphone
- Rear Camera Cable
- RCA Cable
- User Manual (this document)
- Mounting bracket
- Radio Antenna

Image: Product dimensions and included accessories.
4. Installation
Professional installation is recommended. Ensure the vehicle's power is disconnected before beginning installation.
4.1 Wiring Diagram
Refer to the following diagrams for correct wiring connections:

Image: Main installation wiring diagram.
4.2 Rear View Camera Wiring
Connect the included rear view camera as shown:

Image: Rear view camera wiring diagram.
- Red Cable (1 & 3): Connect to the positive (+) of the car's reverse light power supply.
- Black Cable (2 & 4): Connect to the negative (-) of the car's reverse light power supply.
- Reverse Trigger Wire (5): Connect the pink wire on the power harness to the car's reverse signal wire.
- The two small short wires on the rear camera input cable are for Bluetooth and WiFi antennas, enhancing signal reception.
5. Operating Instructions
5.1 Basic Controls and Interface
The unit features a 7-inch InCell 1080P HD touchscreen and physical buttons on the left side for quick access to functions like volume, mode, and navigation. The intuitive interface allows for smooth operation.

Image: Convenient buttons and multiple user interfaces.
5.2 Touchscreen Operation
The 7-inch InCell capacitive touchscreen offers a fast response, true color display, and is dustproof. It is fully laminated without any airgap, providing clearer and brighter viewing even in sunlight.

Image: 1280*720 In-Cell Capacitive Touch Screen features.
5.3 Wireless CarPlay & Android Auto
Connect your smartphone wirelessly to access navigation, music, calls, and more directly on the car stereo display. This feature supports both Apple CarPlay and Android Auto for seamless integration.

Image: Wireless CarPlay and Android Auto functionality.
5.4 GPS Navigation
The built-in GPS module provides precise navigation. It supports both online and offline maps, offering voice guidance and real-time traffic alerts. Connect to Wi-Fi via mobile hotspot for online map updates and real-time traffic data.

Image: Online and offline GPS navigation.
5.5 Bluetooth Function
Pair your mobile phone via Bluetooth for hands-free calling and wireless audio streaming. Access your phone's contacts and call history directly from the stereo.

Image: Bluetooth function for calls and music.
5.6 FM/RDS Radio & EQ Sound
Tune into your favorite FM radio stations with clear sound quality. The RDS (Radio Data System) provides additional information like station name and song title. Customize your audio experience using the built-in EQ (Equalizer) function to match your preferences.

Image: DSP/EQ sound settings interface.
5.7 Rear View Camera Display
When a rear view camera is connected to the video input port, a clear image of the rear view will automatically appear on the screen when the vehicle is put into reverse, aiding in safer parking and backing up. The included camera offers AHD 720P resolution, a 130° viewing angle, night vision, and IP68 waterproofing.

Image: Rear view camera display and features.
5.8 Steering Wheel Control (SWC)
The unit supports steering wheel control learning, allowing you to map your vehicle's original steering wheel buttons to control functions like volume adjustment, track switching, and answering calls without taking your hands off the wheel.
5.9 USB & Type-C Ports
The stereo is equipped with both USB and Type-C ports. These ports support fast charging for two devices simultaneously and allow you to play local music, access stored files, or sync media directly from your devices.

Image: Side controls, USB/Type-C charging, and volume adjustment.
5.10 Split Screen Functionality
Utilize the split-screen feature to run two applications simultaneously, such as navigation and music playback, enhancing multitasking capabilities while driving.
6. Maintenance
- Cleaning: Use a soft, dry cloth to clean the screen and unit. Avoid abrasive cleaners or solvents.
- Software Updates: Periodically check for software updates to ensure optimal performance and access to new features. Updates can typically be performed via Wi-Fi.
- Temperature: Do not leave the unit in direct sunlight or extreme temperatures for extended periods when the vehicle is parked.
7. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| No power | Incorrect wiring; Blown fuse; Vehicle battery low. | Check power cable connections; Inspect and replace fuse if necessary; Check vehicle battery. |
| No sound | Volume too low; Speaker wires disconnected; Incorrect audio settings. | Increase volume; Check speaker wiring; Adjust EQ settings. |
| GPS signal lost or inaccurate | GPS antenna obstructed or improperly installed; Poor satellite reception. | Ensure GPS antenna has a clear view of the sky; Re-position antenna; Check antenna connection. |
| Bluetooth connection issues | Device not in pairing mode; Interference; Incorrect pairing procedure. | Ensure phone's Bluetooth is on and in pairing mode; Delete previous pairings and re-pair; Move closer to the unit. |
| Rear camera not displaying | Camera wiring incorrect; Reverse trigger not connected; Camera faulty. | Check camera power and video connections; Verify reverse trigger wire connection; Test camera if possible. |
8. Specifications
| Feature | Specification |
|---|---|
| Brand | Sellrich |
| Model | 4 Core 4+64 |
| Operating System | Android 15 |
| Screen Size | 7 Inches |
| Touch Screen Type | Capacitive (InCell 1080P HD) |
| Memory (RAM) | 4 GB |
| Storage (ROM) | 64 GB |
| Connectivity Technology | Bluetooth, Wi-Fi, USB, Type-C |
| Special Features | Wireless CarPlay, Android Auto, DSP, GPS, FM/RDS, Rear View Camera Support, Steering Wheel Control |
| Map Type | Worldwide (Online/Offline) |
| Audio Output Mode | Bluetooth, FM/RDS |
| Package Dimensions | 7.87 x 6.3 x 4.33 inches |
| Item Weight | 1.92 pounds |
9. Warranty and Support
For warranty information and technical support, please refer to the warranty card included with your product or visit the official Sellrich store on Amazon:
Visit the Sellrich Store on Amazon
Please have your product model number (4 Core 4+64) and ASIN (B0G7RVWMF1) ready when contacting support.