1. Introduction
This manual provides detailed instructions for the safe and effective use of your Bewinner 4K HD Action Camera. Please read this manual thoroughly before operating the device and retain it for future reference. This camera is designed for capturing high-quality video and images in various outdoor and sports environments.
2. What's in the Box
Verify that all items are present upon unboxing:
- 1 x Bewinner 4K HD Action Camera
- 2 x Charging Cables (USB Type-C)
- 1 x User Manual (this document)

Image: Contents of the Bewinner 4K HD Action Camera package, showing the camera, two charging cables, and the user manual.
3. Product Overview
The Bewinner 4K HD Action Camera features a compact design with a 180-degree rotating lens and a 1.3-inch HD screen for versatile recording. It includes an LED fill light for low-light conditions and supports WiFi connectivity for app control and real-time viewing.

Image: A detailed view of the camera's side, highlighting the power button, reset button, and TF card slot, along with the integrated clip.
Key Features:
- 4K Ultra HD Recording: Capture high-resolution video and 40MP images.
- 135° Wide Angle View: Expansive field of view for comprehensive scene capture.
- 180° Rotatable Lens: Adjust the lens angle for flexible shooting perspectives.
- 1.3-inch HD Screen: For easy framing, playback, and settings adjustment.
- LED Fill Light: Enhances visibility in low-light environments.
- WiFi Connectivity: Connect to a mobile app for remote control and file management.
- Loop Recording: Automatically overwrites oldest footage when storage is full.
- Integrated Clip: For easy attachment to clothing or other surfaces.
- Micro SD Card Support: Supports up to 256GB for extensive storage.
4. Setup
4.1. Charging the Camera
Before first use, fully charge the camera's built-in 1000mAh Li battery. Use one of the provided USB Type-C charging cables to connect the camera to a power source (e.g., computer USB port, USB wall adapter).

Image: The camera's Type-C charging port is visible, indicating where to connect the charging cable. A battery icon on the screen suggests charging status.
4.2. Inserting a Micro SD Card
The camera requires a Micro SD card (not included) for storing recordings. It supports capacities from 4GB to 256GB. Ensure the card is formatted correctly before use (refer to the camera's settings menu).
- Locate the Micro SD card slot on the side of the camera.
- Gently insert the Micro SD card into the slot until it clicks into place.
- To remove, press the card inward until it springs out.

Image: An illustration showing a Micro SD card being inserted into the designated slot on the side of the camera, with a "Supports up to 256G" label.
4.3. Powering On/Off
Press and hold the Power button (usually marked with a universal power symbol) on the side of the camera to turn it on or off. The 1.3-inch HD screen will illuminate upon power-on.
5. Operating the Camera
5.1. Basic Recording
Once powered on, the camera is typically in video recording mode. Press the "OK" button to start recording. Press it again to stop. The screen will display recording status and time.
Video: This video demonstrates the unboxing, Micro SD card insertion, powering on, and basic recording functions of the Bewinner 4K HD Action Camera, including rotating the lens and using the control buttons.
5.2. Rotating the Lens
The camera features a 180-degree rotatable lens. Gently rotate the lens module to adjust your shooting angle. This allows for flexible perspectives, including self-recording or capturing subjects from different directions without re-positioning the entire camera.
5.3. Using the LED Fill Light
The integrated LED fill light can be activated to improve video and image quality in low-light conditions. Refer to the camera's menu settings to toggle the LED light on or off. This feature is particularly useful for night vision recording, providing full-color effects even in dark environments.

Image: A comparison showing the camera's performance with LED fill light in both bright daylight and dark night environments, highlighting its ability to record clear video in various lighting conditions.
5.4. WiFi Connectivity and App Control
The camera has built-in WiFi for connecting to a dedicated mobile application. This allows for real-time viewing, remote control, video playback, and downloading files directly to your smartphone.
- Download the official Bewinner camera app from your device's app store.
- Turn on WiFi on your camera via the settings menu.
- Connect your smartphone to the camera's WiFi network (SSID and password usually displayed on the camera screen).
- Open the app to access live view, controls, and media management features.

Image: The camera wirelessly connected to a smartphone, demonstrating real-time video viewing and control through the mobile application.
5.5. Adjusting Viewing Angle and Screen
The 1.3-inch HD screen provides a clear view of your recordings and settings. You can adjust the video angle at any time using the rotatable lens or through the app for precise framing.

Image: The camera's 1.3-inch HD screen displaying a live view, with an arrow indicating the ability to adjust the video angle for a wider perspective, also showing mirroring on a smartphone.
5.6. Loop Recording
The camera supports loop recording, which automatically records over the oldest files when the memory card is full. This ensures continuous recording without manual deletion of old footage. This feature can be enabled or disabled in the camera's settings.

Image: A visual representation of loop recording, showing how the camera continuously records and overwrites the earliest video segments when storage capacity is reached.
5.7. Mounting and Wearability
The camera is designed for versatile mounting. It features an integrated clip for easy attachment to clothing or gear. It is also compatible with various mounts, such as bike mounts and car suction mounts (sold separately), expanding its usability for different activities.

Image: The camera being used in different scenarios, including cycling, motorcycling, attached to a jacket pocket, and during hiking, demonstrating its wide adaptation to various mounts and wearability.
6. Maintenance
- Cleaning: Use a soft, dry cloth to clean the camera body. For the lens, use a specialized lens cleaning cloth and solution. Avoid harsh chemicals.
- Storage: Store the camera in a cool, dry place away from direct sunlight and extreme temperatures.
- Battery Care: To prolong battery life, avoid fully discharging the battery frequently. Charge it regularly, even if not in use for extended periods.
- Firmware Updates: Check the manufacturer's website or the companion app for any available firmware updates to ensure optimal performance and new features.
7. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Camera does not power on. | Low battery; device malfunction. | Charge the battery fully. If the issue persists, perform a reset using the reset button. |
| Cannot record video/take photos. | No Micro SD card; Micro SD card full or corrupted; incorrect settings. | Insert a Micro SD card. Check available storage. Format the card if necessary (this will erase all data). Verify recording settings. |
| Poor video/image quality. | Dirty lens; low light conditions; incorrect resolution settings. | Clean the lens. Activate the LED fill light in low light. Ensure 4K resolution is selected in settings. |
| WiFi connection issues. | WiFi not enabled on camera; incorrect password; app issues. | Enable WiFi on the camera. Double-check the WiFi password. Restart the camera and the app. |
| Camera freezes or becomes unresponsive. | Software glitch; low battery. | Press the reset button (RST) using a thin object (e.g., paperclip). Ensure the battery is charged. |
8. Specifications
| Feature | Detail |
|---|---|
| Item Type | Action Camera |
| Material | ABS |
| Video Resolution | 4K (Maximum) |
| Image Resolution | 40MP (Maximum) |
| Storage | Supports 4 to 256GB Micro SD Card (Not Included) |
| Battery | 1000mAh Li Battery (Built-in) |
| Package Dimensions | 6.3 x 3.15 x 1.97 inches |
| Item Weight | 6.4 ounces |
| Model Number | Bewinnern4f81ds0pi |
| Shooting Modes | Burst, Time-lapse |
| Exposure Control Type | Automatic |
| Color | Black |
| Media Type | Micro SD Card |
9. Warranty & Support
9.1. Warranty Information
For warranty details, please refer to the warranty card included with your product or visit the official Bewinner website. Keep your purchase receipt as proof of purchase for any warranty claims.
9.2. Customer Support
If you encounter any issues not covered in this manual or require further assistance, please contact Bewinner customer support through their official website or the contact information provided in your product packaging. You can also visit the Bewinner Store on Amazon for additional product information and support resources.
