1. Introduction
Thank you for choosing the Conrain M301 Pro MP3 Player. This device is designed to provide a versatile and high-quality audio and video experience, featuring Bluetooth, Wi-Fi connectivity, and a responsive touchscreen. This manual will guide you through the setup, operation, and maintenance of your new MP3 player to ensure optimal performance and longevity.
2. Safety Information
Please read all safety instructions carefully before using the device. Failure to follow these instructions may result in electric shock, fire, or damage to the device.
- Do not expose the device to extreme temperatures, direct sunlight, or high humidity.
- Avoid dropping or subjecting the device to strong impacts.
- Do not disassemble, repair, or modify the device yourself. Refer all servicing to qualified personnel.
- Use only the provided charging cable and a compatible power adapter (max 1A output) to prevent battery damage.
- Keep the device away from water and other liquids.
- Prolonged listening at high volume levels may cause hearing damage. Adjust volume to a safe level.
3. Package Contents
Verify that all items are present in the package:
- 1x Conrain M301 Pro MP4 Player
- 1x Type-C USB charging cable
- 1x Wired headphone
- 1x 64GB TF card (pre-installed or separate)
- 1x Protective film (pre-applied or separate)
- 1x Protective case
- 1x User Manual (this document)

Figure 3.1: Included Accessories
4. Product Overview
The Conrain M301 Pro features a compact design with a 4.02-inch IPS touchscreen and intuitive controls.

Figure 4.1: Front View of the M301 Pro
Key Features:
- 4.02-inch IPS Touchscreen: Provides clear visuals and responsive interaction.
- Android 13 System: Enhanced performance and user experience.
- MTK 8-Core Processor: Ensures smooth multitasking and efficient operation.
- 96GB Storage Capacity: 32GB built-in + 64GB TF card, expandable up to 1TB.
- Bluetooth 5.0: For stable and fast wireless audio connections.
- Wi-Fi Connectivity: Access online streaming services and app downloads.
- Built-in Speaker: For audio playback without headphones.
- FM Radio: Listen to local radio stations.

Figure 4.2: Internal Components Overview

Figure 4.3: Storage Capacity and Expansion
5. Setup
5.1 Charging the Device
Before first use, fully charge the MP3 player. Connect the provided Type-C USB cable to the device's charging port and the other end to a USB power adapter (not included, max 1A output) or a computer's USB port. The charging indicator will show progress, and the device typically takes about 3 hours for a full charge.
5.2 Inserting the TF Card
The device comes with a 64GB TF card. If it's not pre-installed, locate the TF card slot on the side of the player. Gently insert the TF card with the gold contacts facing down until it clicks into place. To remove, push the card in slightly until it springs out.
5.3 Initial Power On and Wi-Fi Connection
- Press and hold the power button (located on the side) until the screen lights up.
- Follow the on-screen prompts to select your language and region.
- To connect to Wi-Fi, navigate to Settings > Network & internet > Wi-Fi.
- Toggle Wi-Fi on, select your desired network from the list, enter the password, and tap Connect.

Figure 5.1: Wi-Fi Connectivity and App Customization
6. Operating Instructions
6.1 Music Playback
The M301 Pro comes with the HiBy app for music playback, supporting various formats like MP3, WAV, APE, FLAC, and AAC.
- Open the HiBy music app from the home screen.
- The app will scan for music files on your device and TF card.
- Browse your music library by artist, album, song, or playlist.
- Tap on a song to begin playback.
- Use the on-screen controls for play/pause, skip, shuffle, and repeat.
- Adjust the equalizer settings within the HiBy app for personalized sound.

Figure 6.1: HiBy Music App Interface
6.2 Video Playback
The device supports 1080P HD video playback in formats such as AVI, MKV, RMVB, MP4, MPG, and MOV.
- Locate and open a video player app (e.g., the default video player or a downloaded app).
- Browse your video files.
- Tap on a video to play it.

Figure 6.2: Video Playback on M301 Pro
6.3 Bluetooth Connectivity
Connect your MP3 player to Bluetooth headphones, speakers, or other devices for wireless audio.
- Go to Settings > Connected devices > Bluetooth.
- Toggle Bluetooth on.
- Ensure your Bluetooth audio device is in pairing mode.
- Select your device from the list of available devices to pair.

Figure 6.3: Bluetooth Pairing
6.4 App Installation (Google Play Store)
The device supports installing additional applications via the Google Play Store.
- Ensure the device is connected to Wi-Fi.
- Open the Play Store app from the home screen.
- Sign in with your Google account or create a new one.
- Search for and download desired applications (e.g., Spotify, Amazon Music, Audible, Deezer).
Video 6.1: Demonstration of app installation and usage on the Conrain M301 Pro MP3 Player, showcasing its Wi-Fi capabilities and access to various music streaming services.
6.5 FM Radio
To use the FM Radio function, connect wired headphones to the 3.5mm audio jack, as they act as the antenna.
- Plug in your wired headphones.
- Open the FM Radio app.
- Use the on-screen controls to scan for stations or manually tune to a frequency.
7. Maintenance
7.1 Cleaning
Wipe the device with a soft, dry, lint-free cloth. Do not use abrasive cleaners, alcohol, or solvents.
7.2 Battery Care
The M301 Pro features a 2000mAh lithium battery. To maximize battery life:
- Avoid fully discharging the battery frequently.
- Charge the device regularly, even if not in use for extended periods.
- Do not expose the device to extreme heat or cold.
- Use only chargers with a maximum output of 1A. Higher amperage chargers can damage the battery.

Figure 7.1: Battery Performance Overview
7.3 Storage
When storing the device for a long time, ensure it is partially charged (around 50%) and stored in a cool, dry place.
8. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Device does not power on. | Low battery; system crash. | Charge the device for at least 30 minutes. If unresponsive, press and hold the power button for 10-15 seconds to force restart. |
| Cannot connect to Wi-Fi. | Incorrect password; out of range; router issue. | Double-check password. Move closer to the router. Restart the router. |
| Bluetooth device not pairing. | Device not in pairing mode; out of range. | Ensure Bluetooth device is in pairing mode. Move devices closer. Restart both devices. |
| Music/Video playback issues. | Corrupt file; unsupported format; insufficient storage. | Verify file integrity and format. Check available storage. Try a different media player app. |
| Short battery life. | High screen brightness; background apps; frequent Wi-Fi/Bluetooth use. | Reduce screen brightness. Close unused apps. Turn off Wi-Fi/Bluetooth when not in use. Ensure charger is 1A max. |
9. Specifications
| Feature | Detail |
|---|---|
| Model Name | M301 Pro |
| Brand | Conrain |
| Operating System | Android 13 |
| Processor | MTK 8-Core |
| RAM | 4GB |
| Internal Storage | 32GB |
| Expandable Storage | 64GB TF card included, supports up to 1TB |
| Screen Size | 4.02 Inches IPS Touchscreen |
| Connectivity | Bluetooth 5.0, Wi-Fi, Aux, USB Type-C |
| Battery Capacity | 2000mAh Lithium Polymer |
| Music Playback Time | Up to 50 hours |
| Video Playback Time | Up to 8 hours |
| Charging Time | Approx. 3 hours (with 1A charger) |
| Product Dimensions | 0.35 x 2.24 x 4 inches |
| Item Weight | 3.09 ounces |
| Supported Audio Formats | MP3, WAV, APE, FLAC, AAC, etc. |
| Supported Video Formats | AVI, MKV, RMVB, MP4, MPG, MOV, etc. |
10. Warranty and Support
Conrain products are manufactured to high quality standards. For warranty information and technical support, please refer to the contact details provided on the product packaging or visit the official Conrain website. Please retain your proof of purchase for warranty claims.





