| Item | Specification |
| Model | S2 STC-9909 |
| Product Type | Android Car Stereo |
| Processor | Allwinner 133 Quad-Core |
| CPU Frequency | 1.6GHz |
| System | Android |
| Memory | 4GB+64GB |
| Screen Size | 9 Inch |
| Screen Type | QLED HD Display |
| Resolution | 1280×720 |
| WiFi | 5G + 2.4G Dual-Band WiFi |
| Bluetooth | Bluetooth 5.0 |
| Navigation | GPS+BD / GPS+GLONASS |
| Phone Link | Wireless CarPlay / Android Phone Connection |
| Rear Camera Input | 1080P / 720P AHD |
| Remote Track Viewing | Optional, Requires Third-Party Backend Service |
| Audio Output | RCA 4.1CH Output |
| Audio Channels | FL / FR / RL / RR / SUB |
| EQ | 32-Band EQ |
| Power Amplifier | 7388 |
| FM Radio | Supported |
| Video Output | USB to HDMI / CVBS With Optional Output Box |
| UI | GX34 |
The 9-inch QLED screen provides 1280×720 HD resolution for clear navigation, media playback, rear camera viewing, and system operation. Compared with ordinary displays, the QLED screen offers vivid color performance, high brightness, and a wide viewing angle, making information easier to read inside the car.
S2 STC-9909 supports wireless CarPlay and Android phone interconnection, allowing drivers to access navigation, music, calls, messages, and voice control directly from the car stereo screen. Once connected, the system helps reduce cable clutter and makes daily driving more convenient.
The unit supports 5G and 2.4G dual-band WiFi for faster speed, wider coverage, and more stable wireless transmission. It is suitable for online navigation, app updates, music streaming, and smooth phone connection during daily driving. Bluetooth 5.0 also supports quick pairing, stable calls, and wireless music playback.
The system supports GPS+BD or GPS+GLONASS dual-mode navigation. With more satellite positioning options, it helps improve signal stability and route guidance accuracy in cities, highways, and complex road environments.
S2 STC-9909 supports 1080P and 720P AHD rear camera input, delivering a clearer reversing image for safer parking. It helps drivers view the rear area more easily in parking lots, narrow roads, and low-light environments.
The unit supports 32-band EQ, 7388 power amplifier, and RCA 4.1CH output including FL, FR, RL, RR, and SUB. Users can fine-tune the sound field, enhance bass output, and build a richer in-car audio experience.
S2 STC-9909 supports USB to HDMI or CVBS video output for external display expansion. This function requires an extra video output box. It is suitable for customized projects that need additional screens or expanded video output.
The unit supports mobile remote track viewing through a third-party backend service. Users can review route history, trip distance, driving duration, and vehicle movement records through a mobile device. This is an optional feature, and availability depends on the third-party platform service.
S2 STC-9909 is suitable for upgrading original car stereo systems with a larger QLED touchscreen, Android interface, wireless phone connection, navigation, and multimedia playback.
Drivers can use navigation, music, Bluetooth calls, wireless CarPlay, Android phone link, and FM radio from one central display, making daily commuting more convenient.
With 1080P/720P AHD camera input, the unit helps improve reversing visibility and parking safety.
32-band EQ, 7388 amplifier, and RCA 4.1CH output provide more flexibility for car audio tuning and speaker expansion.
The 9-inch screen, Android system, wireless CarPlay, dual-band WiFi, AHD camera support, and multiple practical functions make it suitable for car electronics wholesalers, distributors, and installation shops.
