MGSTN DFGJ

MGSTN Mini 120 4K Camera Instruction Manual

Model: DFGJ

1. Introduction

This manual provides essential instructions for the safe and effective use of your MGSTN Mini 120 4K Camera. Please read this manual thoroughly before operating the device and retain it for future reference. The MGSTN Mini 120 4K Camera is a compact, wearable action camera designed for capturing high-quality video and photos in various environments, including sports, outdoor activities, and daily recording.

2. What's in the Box

Verify that all items are present in your package:

  • MGSTN Mini 120 4K Camera
  • Magnet Pendant
  • Safety Cord
  • 360° Rotating Clip
  • Waterproof Case (for 30M depth)
  • Mounting Accessories (e.g., for helmets, handlebars)
  • Charging Cable
Image showing the MGSTN Mini 120 4K Camera and its included accessories, such as the camera itself, a magnetic pendant, safety cord, various clips and mounts, and a waterproof case.
Figure 2.1: Package Contents for the MGSTN Mini 120 4K Camera.

3. Product Overview

The MGSTN Mini 120 4K Camera offers advanced features in a compact design:

  • 4K HD Video Recording: Capture videos in stunning 4K resolution with vibrant colors and sharp details.
  • Extended Battery Life: Up to 90 minutes of 4K recording or 150 minutes in 1080P on a single charge. Supports recording while charging.
  • 30M Waterproof with Case: The included waterproof case allows the camera to operate safely up to 30 meters (98ft) underwater. Note: The camera itself is not waterproof without the case.
  • Versatile Mounting Options: Includes a magnetic pendant, safety cord, and 360° rotating clip for flexible attachment to clothing, helmets, handlebars, and more.
  • Ultra-Compact and Lightweight: Weighing only 1.25oz, its small size allows for discreet and hands-free filming.
  • Wireless Connectivity: Built-in Wi-Fi and Bluetooth enable effortless footage transfer to smartphones, live previews, and instant video playback via a dedicated app.
Image showing the MGSTN Mini 120 4K Camera with a 120-degree wide-angle lens and magnetic attachment, alongside a person cycling, illustrating its use as an HD sport camera.
Figure 3.1: MGSTN Mini 120 4K Camera with 120° Wide-Angle Lens.
Image demonstrating 4K high-definition recording, showing clear and visible photos and videos. It illustrates how 4K resolution is equivalent to 1080p magnified 4 times, maintaining clarity, with examples of skiers at different resolutions (720p, 1080p, 2K, 4K).
Figure 3.2: 4K High-Definition Recording Capability.

4. Setup

4.1 Charging the Camera

Before first use, fully charge the camera. Connect the camera to a USB power source using the provided charging cable. The LED indicator will show charging status and turn off when fully charged. The camera supports recording while charging.

4.2 Inserting a Micro SD Card

The camera requires a Micro SD card (up to 128GB, Class 10 or V30 recommended) for storing recordings. Locate the Micro SD card slot on the side of the camera. Gently insert the card with the contacts facing down until it clicks into place. Ensure the card is formatted before use (refer to the app for formatting options).

4.3 Mounting the Camera

Utilize the various accessories for flexible mounting:

  • Magnet Pendant: For easy, hands-free POV shots by wearing it around your neck.
  • Easy Clip: Attach to pockets, belts, caps, or pet collars.
  • Safety Cord: Use for added security when mounting.
  • Other Mounts: Securely attach to helmets, dashboards, or handlebars using the provided specialized mounts.
Image showing various mounting options for the MGSTN Mini 120 4K Camera, including helmet top, side of helmet, and handlebar mounting, with a person riding a motorcycle in the background.
Figure 4.1: Helmet and Handlebar Mounting Options.
Image illustrating the camera's convenient back clip design for attaching to clothes or backpacks, built-in magnetic suction for flexible shooting angles, and the use of a waterproof case for diving up to 30 meters.
Figure 4.2: Back Clip, Magnetic Suction, and Waterproof Case Usage.

5. Operating Instructions

5.1 Quick Start Guide

  1. Power On: Press and hold the power button to turn on the camera.
  2. Start/Stop Recording: Press the power button once to start recording. Press again to stop.
  3. Wi-Fi Mode: Double-click the power button after turning on to enter Wi-Fi mode (Blue-green LED flashes).
  4. Connect to App: Open your phone's settings to connect to the camera's Wi-Fi hotspot. Then, open the dedicated app to watch live footage, transfer files, and adjust settings.
Quick Guide image showing four steps: 1. Power on by pressing and holding the button. 2. Press the button twice quickly to enter Wi-Fi mode. 3. Open phone settings to connect to the camera's hotspot. 4. Enter password, open the app, and watch live.
Figure 5.1: Quick Guide for Basic Operation.

5.2 Recording Modes

The camera supports various recording modes, including standard video, photo capture, and audio recording. Specific mode selection and advanced settings are typically managed through the connected smartphone app.

Image showing the MGSTN Mini 120 4K Camera capturing a moment with friends around a campfire, with icons for Photo, Video, and Record, indicating its versatility.
Figure 5.2: Easy Capture of Photos, Videos, and Audio.

5.3 Loop Recording

The camera features loop recording, which automatically overwrites the oldest footage when the storage card is full. This ensures continuous recording without manual intervention, ideal for security footage or long-duration activities.

Image illustrating the loop recording feature, showing a cyclist and two camera icons, one indicating automatic overage and overwrite, supporting up to 128GB.
Figure 5.3: Loop Recording Functionality.

5.4 Wi-Fi Connectivity and App Usage

Connect your camera to your smartphone via Wi-Fi for enhanced control and media management. The dedicated app allows for:

  • Live preview of the camera's view.
  • Remote control of recording functions.
  • Instant video playback.
  • Seamless file transfers and sharing.
Image showing the MGSTN Mini 120 4K Camera with Wi-Fi signal, and a smartphone displaying a grid of captured photos and videos, illustrating one-click download and sharing on mobile phone.
Figure 5.4: Built-In Wi-Fi for Mobile Connectivity.
Video 5.1: Demonstration of the MGSTN Mini 120 4K Camera in use, showcasing its POV recording capabilities and compact design.

6. Maintenance

6.1 Cleaning

To clean the camera body, use a soft, dry cloth. For the lens, use a specialized lens cleaning cloth and solution to avoid scratches. Do not use harsh chemicals or abrasive materials.

6.2 Storage

Store the camera in a cool, dry place away from direct sunlight and extreme temperatures. When storing for extended periods, ensure the battery is partially charged (around 50%) to prolong its lifespan. Remove the Micro SD card if not in use.

6.3 Waterproof Case Care

After using the waterproof case in saltwater, rinse it thoroughly with fresh water and allow it to air dry. Inspect the O-ring seal regularly for any debris or damage to ensure its waterproof integrity.

7. Troubleshooting

If you encounter issues with your MGSTN Mini 120 4K Camera, refer to the following common solutions:

ProblemPossible CauseSolution
Camera does not power on.Low battery; faulty charging cable/adapter.Charge the camera fully. Try a different charging cable or adapter.
Cannot record video/take photos.No Micro SD card; SD card full or corrupted; incorrect mode.Insert a Micro SD card. Format or replace the SD card. Ensure sufficient storage. Check recording mode via app.
Wi-Fi connection issues.Wi-Fi not enabled on camera; incorrect password; interference.Double-click the power button to enable Wi-Fi. Re-enter Wi-Fi password. Move closer to the camera.
Poor video quality.Dirty lens; low light conditions; incorrect resolution settings.Clean the camera lens. Ensure adequate lighting. Adjust resolution settings in the app to 4K.
Camera freezes or becomes unresponsive.Software glitch; full memory card.Perform a soft reset by holding the power button for 10-15 seconds. Ensure the Micro SD card has free space.

8. Specifications

FeatureDetail
BrandMGSTN
Model NumberDFGJ
Video Capture Resolution4K (3840x2160 pixels)
Video Capture FormatMP4
Image Aspect Ratio16:9
Supported Image FormatJPEG
Flash Memory TypeSD (Supports up to 128GB)
Flash Memory Speed ClassC10, V30 recommended
Connectivity TechnologyBluetooth, Wi-Fi
Lens TypeWide Angle (120°)
Focus TypeAuto Focus
Image StabilizationDigital
Water Resistance LevelWaterproof (with included case, up to 30M)
Battery Average Life90 minutes (4K), 150 minutes (1080P)
Form FactorUltra Compact
Dimensions64.5mm x 28mm x 20mm (approx. 2.54in x 1.1in x 0.787in)
Weight37g / 1.25oz
Compatible DevicesSmartphone, Tablet, Personal Computer
Image showing the dimensions of the MGSTN Mini 120 4K Camera: 64.5mm (2.54in) in length, 28mm (1.1in) in width, and 20mm (0.787in) in thickness, with a weight of 37g (1.25oz).
Figure 8.1: Camera Dimensions and Weight.

9. Warranty Information

The manufacturer provides NO explicit warranty description for this product. Please refer to your retailer's return policy or contact the seller directly for any warranty-related inquiries.

10. Support

For further assistance, technical support, or inquiries, please visit the official MGSTN brand store on Amazon or contact the seller directly through the platform where the product was purchased.

MGSTN Brand Store: https://www.amazon.com/stores/MGSTN/page/2AA925E0-E976-414C-B866-FE8C570C4B6E

© 2026 MGSTN. All rights reserved.

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