Introduction
The Tengsen MP3 Player with Bluetooth 5.0 is a versatile portable media device designed for music, video, and e-book enjoyment. Featuring a 4.0-inch touchscreen, 16GB of built-in memory, and expandable storage up to 128GB via a TF card, it offers extensive entertainment options on the go. This manual provides detailed instructions for setting up, operating, and maintaining your device.
Video 1: Product Overview
This video provides an overview of the Tengsen MP3 Player, showcasing its features such as the 4.0-inch touchscreen, HD video playback, and various functions like music, e-book, FM radio, and Bluetooth connectivity. It also demonstrates the process of charging the device and connecting it to a computer for data transfer.
What's in the Box
Upon unboxing your Tengsen MP3 Player, please ensure all the following items are present:
- Tengsen MP3 Player
- Earphone
- USB Cable
- Sport Armband
- User Manual (this document)
Setup
1. Initial Charging
Before first use, fully charge your MP3 player. Connect the provided USB cable to the Type-C port at the bottom of the device and the other end to a USB power adapter or a computer's USB port. The device will indicate charging status on the screen. A full charge ensures optimal performance and battery life.

Image 1: Long Battery Life
This image highlights the 1400mAh battery capacity of the Tengsen MP3 Player, indicating extended usage times for both video and music playback.
2. Powering On/Off
To power on or off the device, locate the lock/unlock button on the side. Press and hold this button until the screen illuminates or shuts down. If the device does not power on, ensure it is sufficiently charged.
Video 2: Powering On/Off
This segment demonstrates how to power the MP3 player on and off using the side button, and provides a tip for troubleshooting if the device does not start.
3. Data Transfer
To transfer music, videos, images, or e-books to your device, connect it to your computer using the USB cable. Once connected, a pop-up will appear on the MP3 player's screen. Select the 'Power and Data' option to enable file transfer. Your computer will recognize the device as a removable storage drive, allowing you to drag and drop files into the appropriate folders (e.g., Music, Video, Pictures, E-book).
Video 3: Data Transfer
This video segment illustrates the process of connecting the MP3 player to a computer via USB and transferring various media files, including music, videos, and images, to the device's storage.
4. Expanding Storage
The Tengsen MP3 player comes with 16GB of internal storage. For additional capacity, it features a micro TF card slot on the left side of the device. You can expand the storage up to 128GB by inserting a compatible TF (microSD) card (not included).

Image 2: Device Overview with Accessories
This image displays the Tengsen MP3 Player alongside its included accessories, such as the USB cable, earphones, and sport armband, emphasizing its 4.0-inch full screen and Bluetooth 5.0 capabilities.
Operating Instructions
1. Navigating the Interface
The device features a 4.0-inch multi-touch display with IPS technology. Navigate through menus and select functions by tapping on the corresponding icons. Swipe gestures are used for scrolling and accessing additional options.

Image 3: Main Menu Interface
This image shows the main menu of the Tengsen MP3 Player, displaying various application icons such as Music, E-book, Video, Radio, Photo, Bluetooth, Calculator, Recorder, Calendar, Folder, Stopwatch, and Settings.
2. Music Playback
Tap the 'Music' icon to access your audio files. The player supports various formats including MP3, DRM WMA, OGG, APE, and FLAC. You can browse by artist, album, or song. Use the on-screen controls for play, pause, skip, and volume adjustment.

Image 4: Sports Music Life
This image depicts the Tengsen MP3 Player in a sports context, highlighting its Hi-Fi lossless sound and sport pedometer function while music is being played.
3. Video Playback
Select the 'Video' icon to play video files. The device supports AVI, MKV, MPG, MPEG, RM, RMVB, VOB, MOV, FLV, ASF, DAT, MP4, 3GP, and offers 720p/1080p high-resolution video playback. Use the touchscreen for playback controls.

Image 5: 1080P Video Support
This image demonstrates the Tengsen MP3 Player's capability to support 1080P video playback, showcasing a video playing on its screen.
4. FM Radio
Access the 'FM Radio' function from the main menu. Ensure earphones are connected as they act as the antenna. Scan for available stations and save your favorites.
5. Voice Recorder
Tap the 'Recorder' icon to use the built-in voice recorder. This feature allows you to capture audio notes or lectures directly on the device.
6. E-Book Reader
The 'E-Book' function supports reading text files. Transfer your TXT format e-books to the device to read them on the go.
7. Bluetooth Connectivity
The device features Bluetooth 5.0 for stable connections with wireless speakers or headphones. To pair, go to the main menu, select 'Bluetooth', and toggle on 'Bluetooth transmission'. Ensure no other devices are connected to your speaker or headphone, and that all previously paired devices have been forgotten from the speaker/headphone. Once your device is found, tap on it to connect. Note: This MP3 player can only connect to wireless speakers or wireless headphones and will not connect to a cell phone.

Image 6: Bluetooth 5.0 Upgrade
This image emphasizes the upgraded Bluetooth 5.0 feature of the Tengsen MP3 Player, promising more stable connections with Bluetooth headsets and speakers.
Video 4: Bluetooth Pairing
This video segment guides the user through the process of connecting Bluetooth headphones or speakers to the MP3 player, including important considerations for successful pairing.
8. Other Functions
The device includes additional utility functions such as a Calculator, Calendar, and Stopwatch, accessible from the main menu.
Maintenance
1. Cleaning
To clean the device, use a soft, lint-free cloth. For stubborn smudges, slightly dampen the cloth with water. Avoid using harsh chemicals or abrasive materials, as these can damage the screen or casing.
2. Battery Care
To prolong battery life, avoid exposing the device to extreme temperatures. It is recommended to fully charge the device before long periods of inactivity and to recharge it periodically if stored for extended durations.
Troubleshooting
This section addresses common issues you might encounter with your Tengsen MP3 Player.
- Device not turning on: Try charging the MP3 player first, as it will only start when the battery is fully charged.
- Playlist issues: The device may not support sequential playback of custom playlists; music might play from the 'Dir List' (all songs) in sequential or shuffle mode. Future software updates might address this.
- Low volume with Bluetooth speakers/headsets: Ensure no other devices are connected to your speaker or headphone, and that all previously paired devices have been forgotten from the speaker/headphone. Some users have reported that after several resets, the player provides sufficient volume.
- Bluetooth pairing issues: Ensure no other devices are connected to your speaker or headphone, and that all previously paired devices have been forgotten from the speaker/headphone. If pairing gets locked up, you might need to unpair the old item on the MP3 player first, then turn off the paired item itself.
- E-book only supports TXT: The e-book function is limited to TXT format files.
- Shuffle not working as expected: The shuffle function may play songs in the same order each time based on the starting song.
Specifications
| Feature | Detail |
|---|---|
| Brand | Tengsen |
| Model Name | mp3 player with bluetooth |
| Item Model Number | M1US |
| Screen Size | 4 Inches |
| Memory Storage Capacity | 16 GB (expandable to 128GB via TF card) |
| Connectivity Technology | Bluetooth 5.0 |
| Compatible Devices | Laptop, Headphone, Bluetooth Personal Computer, Bluetooth Earphone |
| Media Type | MP4 (supports AVI, MKV, MPG, MPEG, RM, RMVB, VOB, MOV, FLV, ASF, DAT, MP4, 3GP) |
| Battery | 1400mAh Lithium Ion (included) |
| Item Weight | 9.6 ounces |
| Package Dimensions | 6.58 x 5.5 x 1.38 inches |
Warranty and Support
Warranty Information
The Tengsen MP3 Player comes with a 3-month exchange policy and a 1-year factory warranty from the date of purchase.
Customer Support
For any questions, technical assistance, or warranty claims, please contact us via Amazon message.
Legal Disclaimer
Please note that this device is not an Android version, does not require internet connection for its primary functions, and does not support the installation of additional applications. It is a low-power, super endurance player without Wi-Fi capability.
