1. Introduction
Thank you for choosing the GKU 11" 2.5K+2.5K Mirror Dash Cam. This device is designed to provide comprehensive front and rear vehicle recording, enhancing driving safety and providing crucial evidence in case of incidents. Featuring dual 2.5K resolution, a detached front camera, GPS functionality, night vision, loop recording, and parking assistance, this dash cam offers advanced features for a secure driving experience.

2. Safety Information
- Do not operate the dash cam or adjust settings while driving. Always pull over safely before making any adjustments.
- Ensure the dash cam is securely mounted and does not obstruct your view of the road or interfere with vehicle controls.
- Avoid exposing the device to extreme temperatures, direct sunlight for prolonged periods, or excessive moisture.
- Use only the provided power adapter and cables to prevent damage to the device and ensure proper operation.
- Keep the lenses clean to ensure clear recording quality.
3. Package Contents
Verify that all items listed below are included in your package:
- Mirror Dash Cam (1)
- Front Camera (1)
- Rear Camera (1)
- Rear Camera Extension Cable (1)
- GPS Module (1)
- Car Charger Adapter (1)
- Straps (2)
- User Manual (1)
- Crowbar (1)
- Reflective Film (1)

4. Setup & Installation
4.1. Mirror Dash Cam Installation
Secure the main mirror dash cam unit over your existing rearview mirror using the provided straps. Ensure it is firmly attached and does not wobble during driving.
4.2. Detached Front Camera Installation
The detached front camera offers flexibility in placement. Install it on your front windshield in a position that provides a clear view of the road ahead without obstructing your driving visibility. The detached design allows for optimal camera angle adjustment, unlike integrated cameras that may be limited by the mirror's position.

4.3. Rear Camera Installation
The rear camera can be installed either inside the vehicle (e.g., on the rear window) or outside (e.g., near the license plate). For external installation, ensure it is waterproof and securely mounted. Connect the rear camera cable to the main mirror dash cam unit. For parking assistance functionality, connect the red wire of the rear camera to the positive wire of your vehicle's reversing light.

4.4. Connecting Components
Connect the detached front camera, rear camera, and GPS module to their respective ports on the main mirror dash cam unit. Power the device using the provided Type-C car charger adapter. The Type-C port supports positive and negative insertion, fast charging, and fast data transfer, contributing to a longer service life compared to older USB types.
4.5. Installation Video Guide
For a visual guide on the installation process and initial setup, please refer to the official product video below:
This video demonstrates the installation of the mirror dash cam, the detached front camera, and highlights key features such as screen brightness adjustment, display modes, emergency recording, reverse assistance, and GPS functionality.
5. Operating Instructions
5.1. Powering On/Off
The dash cam will automatically power on and begin recording when your vehicle's ignition is turned on. It will power off automatically when the ignition is turned off.
5.2. Adjusting Screen Brightness
The 11-inch IPS touch screen allows for easy adjustment of brightness. Swipe up or down on the screen to access the brightness control slider and set it to your preferred level for optimal visibility during day or night driving.

5.3. Switching Display Modes
The dash cam supports various display modes on its 11-inch FHD IPS screen: Front View Display, Rear View Display, and Split Screen (showing both front and rear views simultaneously). Tap the screen icons to switch between these modes as needed. You can also adjust the viewing angle by swiping on the screen.
5.4. Loop Recording
The device supports seamless loop recording. When the memory card is full, the oldest unlocked footage will be automatically overwritten to make space for new recordings. This ensures continuous recording without manual intervention.

5.5. G-Sensor & Emergency Recording
The built-in G-sensor detects sudden impacts or collisions. In the event of an accident, the G-sensor automatically locks the current video segment, preventing it from being overwritten by loop recording. This ensures critical footage is preserved for evidence.
5.6. 24h Parking Monitoring
With 24-hour parking monitoring, the dash cam can detect impacts or motion even when the vehicle is parked. This feature requires a continuous power supply (hardwire kit, sold separately) to function effectively while the vehicle is off.
5.7. Reverse Assistance
When the vehicle is shifted into reverse, the dash cam automatically displays the rear camera view with adjustable parking guidelines. This assists drivers in safely parking and maneuvering in tight spaces.
5.8. GPS Functionality
The included GPS module records your driving route, speed, and location data. This information can be viewed later using a compatible GPS player on a computer, providing comprehensive details of your journeys.

5.9. Night Vision
The dash cam is equipped with advanced night vision capabilities, ensuring clear and detailed recordings even in low-light conditions or at night. This enhances visibility and safety during nighttime driving.

5.10. 2.5K Resolution
Both the front and rear cameras record in 2.5K resolution, providing significantly clearer and more detailed footage compared to standard 1080P cameras. This higher resolution captures finer details, such as license plates and road signs, which can be crucial for evidence.

6. Maintenance
- Cleaning: Use a soft, dry cloth to clean the dash cam screen and lenses. Avoid using abrasive cleaners or solvents.
- SD Card Management: Regularly format your Micro SD card (at least once a month) to ensure optimal performance and prevent data corruption. Use a high-quality Class 10 or U3 Micro SD card (not included) with a maximum capacity of 128GB.
- Storage: When not in use for extended periods, store the dash cam in a cool, dry place away from direct sunlight.
7. Troubleshooting
- Dash Cam Not Turning On: Ensure the car charger is properly connected and the vehicle's ignition is on. Check the power cable for any damage.
- Recording Issues: Format the Micro SD card. Ensure the card is inserted correctly and is not full. Try a different Micro SD card if issues persist.
- GPS Signal Loss: Ensure the GPS module is securely connected and placed in an area with a clear view of the sky (e.g., on the dashboard). Obstructions like tinted windows or metallic coatings can interfere with the signal.
- Screen Flickering/Unresponsive Touch: Restart the device. Ensure the power supply is stable. If the issue persists, contact customer support.
- Rear Camera Not Displaying: Check the connection of the rear camera cable to both the main unit and the rear camera itself. Ensure the cable is not damaged.
8. Specifications
| Feature | Detail |
|---|---|
| Product Dimensions | 9.84 x 2.95 x 0.39 inches |
| Item Weight | 2.6 pounds |
| ASIN | B09YTCD1NJ |
| Item Model Number | D800 |
| Batteries | 1 Lithium Ion batteries required (included) |
| Connectivity Technologies | USB |
| Special Features | G-Sensor, Loop Recording, Night Vision |
| Display Technology | LCD |
| Other Display Features | Wireless |
| Manufacturer | GKU |
| Date First Available | May 31, 2022 |
| Brand | GKU |
| Screen Size | 11 inches |
| Installation Type | Surface Mount |
| Video Capture Resolution | 1440p (2.5K) |
| Voltage | 12 Volts |
| Optical Sensor Technology | CMOS infrared |
| Lens Type | Fixed, Wide Angle |
| Real Angle of View | 170 Degrees |
| Connector Type | USB |
9. Warranty and Support
For warranty information and details regarding product support, please refer to the documentation included with your purchase or visit the official GKU website. For technical assistance or inquiries, please contact GKU customer service directly.