Introduction
This manual provides detailed instructions for the installation, operation, and maintenance of your DELLFY M16 Dash Cam. Designed for optimal performance and ease of use, this dual-channel dash cam offers 4K Ultra HD front recording and 2K rear recording, ensuring comprehensive coverage of your journeys. Key features include 5G WiFi for fast data transfer, WDR Night Vision for clear low-light recording, and 24-hour parking mode for continuous vehicle monitoring.
What's in the Box
- 1 x M16 4K Dash Cam
- 1 x Ultra HD Rear Camera
- 1 x 32GB SD Card
- 1 x Car Charger
- 1 x Suction Mount
- 1 x 21.3 ft. Rear Camera Connection Cable
- 1 x App Download Connection Tutorial Manual
Product Overview
The DELLFY M16 Dash Cam features a compact design with a 3-inch IPS screen for clear display. It includes a front camera with a 170° wide-angle lens and a rear camera with a 160° wide-angle lens, providing extensive coverage. The device is equipped with a super capacitor for enhanced durability in extreme temperatures.

Figure 1: DELLFY M16 Dash Cam with its main components and smartphone app interface.
Physical Components
- Front Camera: Main recording unit with 4K Ultra HD resolution.
- Rear Camera: Separate unit for 2K recording of the rear view.
- 3-inch IPS Screen: For live view, playback, and menu navigation.
- Suction Mount: Attaches the dash cam securely to the windshield.
- USB-C Port: For power input from the car charger.
- Rear Camera Port: 3.5mm jack for connecting the rear camera cable.
- MicroSD Card Slot: Supports up to 256GB (32GB card included).
Buttons and Controls

Figure 2: Side view of the dash cam illustrating the control buttons.
- Power Button (Bottom Right):
- Hold to turn the camera on/off.
- Short press to turn the screen on/off.
- Lock Button (Above Power): Press to lock the current video file, preventing it from being overwritten during loop recording.
- Mode Button (Above Lock): Switches between recording mode, playback mode, and settings menu.
- OK Button (Top Right): Confirms selections in the menu, starts/stops recording, and plays/pauses videos in playback mode.
- Up/Down Arrow Buttons (Left Side): Navigates through menu options.
- Hold Up Arrow to take a still picture.
- Hold Down Arrow to switch camera display (Front, Rear, Split).
- Menu Button (Middle Left): Accesses the main settings menu.
Setup and Installation
Follow these steps to properly install your DELLFY M16 Dash Cam in your vehicle.
1. Install the MicroSD Card
The 32GB MicroSD card is pre-installed. To remove or re-insert, gently push the card into the slot until it clicks, then release. It will spring out slightly for removal.

Figure 3: Inserting the MicroSD card into the dash cam slot.
2. Mount the Front Dash Cam
Attach the suction mount to the dash cam. Clean the desired area on your windshield. Press the suction cup firmly against the glass and flip the lever to secure it. Adjust the camera angle as needed using the adjustable knob on the mount.

Figure 4: Attaching the suction mount and securing the dash cam to the windshield.
3. Install the Rear Camera
The rear camera uses an adhesive backing. Clean the area on your rear windshield where you want to mount it. Peel off the protective film from the adhesive and firmly press the camera onto the glass. Connect the rear camera to the main dash cam unit using the provided 21.3 ft. cable.

Figure 5: Wiring diagram for connecting the front and rear cameras.
4. Power Connection
Plug the car charger into your vehicle's 12V power outlet. Connect the USB-C end of the car charger cable to the USB-C port on the top of the main dash cam unit. The dash cam will automatically power on and begin recording when your vehicle starts.
Operating Instructions
Basic Operation
- Automatic Recording: The dash cam automatically starts recording when powered on and stops when the power is cut off.
- Loop Recording: Videos are recorded in 1, 3, or 5-minute segments. When the SD card is full, the oldest unlocked files are automatically overwritten.
- G-Sensor (Gravity Sensing): In the event of a sudden shake or collision, the G-sensor will automatically lock the current video file to prevent it from being overwritten. Sensitivity can be adjusted in settings (Off, Low, Middle, High).
- 24-Hour Parking Monitoring: Requires an optional Type-C hardwire kit (not included). This feature allows the dash cam to monitor your vehicle even when parked, recording incidents like theft or vandalism.
Using the Mobile App (Viidure APP)
The DELLFY M16 Dash Cam supports 5G WiFi connectivity for faster data transfer and stable connection to your smartphone via the free Viidure APP (available on Google Play and App Store).

Figure 6: The Viidure mobile application interface.
- Download the App: Search for "Viidure" in your smartphone's app store and install it.
- Connect to WiFi:
- On the dash cam, navigate to the settings menu and enable WiFi.
- On your smartphone, go to WiFi settings and connect to the dash cam's WiFi network (SSID and password usually displayed on the dash cam screen).
- Access Files: Open the Viidure app. You can view live footage, browse recorded videos, and download files directly to your phone.
- Adjust Settings: The app allows you to adjust various camera settings, including video resolution, recording time, sound recording, and G-sensor sensitivity.
Video Quality Demonstration
The following video demonstrates the day and night recording quality of the DELLFY M16 Dash Cam, highlighting its 4K resolution, Wide Dynamic Range (WDR), and low-light capabilities.
Video 1: Demonstration of DELLFY M16 Dash Cam's video quality, app features, and overview of components.
Maintenance
- SD Card Formatting: Regularly format the MicroSD card (at least once a month) to ensure optimal performance and prevent data corruption. This can be done via the dash cam's menu or the mobile app.
- Lens Cleaning: Keep the camera lenses clean using a soft, lint-free cloth to ensure clear video recordings.
- Firmware Updates: Check the manufacturer's website or the mobile app for any available firmware updates to improve performance and add new features.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Dash cam does not power on. | No power supply or faulty connection. | Check car charger connection to both the dash cam and the vehicle's power outlet. Ensure vehicle's power outlet is functional. |
| Video footage is blurry or unclear. | Protective film on lens, dirty lens, or incorrect resolution setting. | Remove any protective film. Clean the lens with a soft cloth. Check video resolution settings in the menu/app and set to 4K. |
| Dash cam freezes or crashes. | SD card error or firmware issue. | Format the SD card. If the issue persists, try restoring factory settings or checking for firmware updates. |
| WiFi connection issues. | Incorrect password or interference. | Ensure correct WiFi password is entered. Try restarting both the dash cam and your smartphone. |
Specifications
- Product Dimensions: 6.2 x 2.7 x 4.7 inches
- Item Weight: 15.8 ounces
- Item Model Number: M16
- Batteries: 1 A batteries required (likely referring to internal super capacitor, not removable battery).
- Connectivity Technologies: Wi-Fi (5G)
- Special Features: 24-hour loop recording, red light night vision parking surveillance, 4K+2.5K Front and rear dash cam, Built-in 32GB SD card, Built-in Wi-Fi, mobile app to watch videos, F2.2 six-layer lens with large aperture.
- Video Capture Resolution: 3840P*2160P (Front)
- Mounting Type: Windshield Mount
- Manufacturer: M16 DELLFY
- Date First Available: February 5, 2025
Warranty and Support
The DELLFY M16 Dash Cam comes with a 1-year quality protection warranty. For technical support, warranty claims, or any inquiries, please contact DELLFY customer service. You can find contact information on the product packaging or the official DELLFY website.
Email: Kalinta181@163.com





