1. Introduction
Thank you for choosing the iMangoo BT-A12 Wireless Bluetooth Earbuds. These earbuds are designed to provide an immersive audio experience with clear call quality, extended battery life, and convenient touch controls. Featuring Bluetooth 5.3 technology and IPX4 water resistance, they are suitable for various activities.
2. Package Contents
Please check the package for the following items:
- 1 x iMangoo BT-A12 Wireless Bluetooth In-Ear Earbuds
- 1 x Charging Case
- 2 sizes of EarGels (ear tips)
- 1 x USB-C Charging Cable
- 1 x User Manual

Image: All items included in the iMangoo BT-A12 package.
3. Product Overview
Familiarize yourself with the components of your iMangoo BT-A12 earbuds.

Image: Earbuds securely placed in the charging case.

Image: Individual earbuds, ready for use.

Image: Dual LED digital display on the charging case indicating battery status for both earbuds and the case.

Image: Internal structure of the 13mm speaker, designed for immersive sound.
4. Setup
4.1 Charging the Earbuds and Case
Before first use, fully charge the earbuds and charging case.
- Connect the USB-C charging cable to the charging port on the case and a power source.
- The LED digital display on the case will show the charging progress.
- Place the earbuds into the charging case. They will automatically begin charging. The display will show individual earbud battery levels.
- A full charge for the case takes approximately 1.5 hours. The earbuds provide up to 6 hours of playtime on a single charge, with the case offering an additional 5 full charges for a total of 50 hours.

Image: Overview of battery life for music and calls, and charging duration.
4.2 Pairing with a Device
The earbuds utilize Bluetooth 5.3 for a fast and stable connection.
- Open the charging case. The earbuds will automatically enter pairing mode.
- On your device (smartphone, tablet, etc.), enable Bluetooth and search for available devices.
- Select "A12" from the list of found devices to connect.
- Once paired, the earbuds will automatically reconnect to your device when taken out of the case, provided Bluetooth is enabled on your device.

Image: Visual guide for one-step Bluetooth pairing.
4.3 Wearing the Earbuds
For optimal sound quality and comfort, ensure a proper fit.
- Choose the correct size of EarGels (ear tips) that best fit your ears. Two sizes are provided.
- Gently insert the earbuds into your ear canals and rotate them slightly until they feel secure and comfortable.

Image: Guide to selecting ear tip size and achieving a comfortable fit.
5. Operating Instructions
5.1 Touch Controls
The iMangoo BT-A12 earbuds feature smart touch controls for easy management of music and calls.
| Function | Action |
|---|---|
| Play/Pause Music | Click left/right earbud x1 |
| Previous Track | Click left/right earbud x3 |
| Next Track | Click left/right earbud x2 |
| Answer Call | Click left/right earbud x1 |
| End Call | Click left/right earbud x2 |
| Reject Call | Press & Hold 2s (left/right earbud) |
| Activate Voice Assistant (Siri, Google Assistant, etc.) | Press & Hold 2s (left/right earbud) |

Image: Visual representation of touch control functions.
5.2 Power On/Off
The earbuds automatically power on when removed from the charging case and power off when placed back into the case and the lid is closed.
5.3 Call Functions
The built-in microphone with ENC (Environmental Noise Cancellation) ensures clear calls. Use the touch controls as described above to manage calls.

Image: Auto ENC technology for clear call quality by reducing environmental noise.
6. Maintenance
Proper maintenance ensures the longevity of your earbuds.
- Cleaning: Regularly clean the earbuds and charging case with a soft, dry, lint-free cloth. Do not use harsh chemicals or abrasive materials.
- Ear Tips: Remove the ear tips and clean them with water and mild soap if necessary. Ensure they are completely dry before reattaching.
- Storage: When not in use, store the earbuds in their charging case to protect them from dust and damage.
- Water Resistance: The earbuds are IPX4 water-resistant, meaning they are protected against splashing water from any direction. They are not designed for swimming or submersion in water. Dry them thoroughly if they get wet.
7. Troubleshooting
If you encounter any issues, please refer to the following common solutions:
- Earbuds not pairing:
- Ensure both earbuds are charged.
- Turn off Bluetooth on your device and turn it back on.
- Forget the "A12" device in your device's Bluetooth settings and try pairing again.
- Place earbuds back in the case, close the lid, wait a few seconds, then open to re-enter pairing mode.
- Only one earbud working:
- Ensure both earbuds are charged.
- Try placing both earbuds back into the charging case, closing the lid, and then taking them out again.
- Reset the earbuds (refer to specific reset instructions if available in a full manual, otherwise, a full charge and re-pairing often resolves this).
- Charging issues:
- Check if the USB-C cable is securely connected to both the case and the power source.
- Try a different USB-C cable and power adapter.
- Ensure the charging contacts on the earbuds and inside the case are clean and free of debris.
- Poor sound quality:
- Ensure the earbuds are properly seated in your ears and you are using the correct size EarGels.
- Clean any earwax or debris from the earbud nozzles.
- Move closer to your connected device to avoid interference or range issues.
8. Specifications
| Feature | Detail |
|---|---|
| Model Number | BT-A12 (iM-DE-458) |
| Bluetooth Version | 5.3 |
| Speaker Size | 13mm |
| Earbud Playtime | Up to 6 hours |
| Total Playtime (with case) | Up to 50 hours |
| Charging Time (case) | Approx. 1.5 hours (USB-C) |
| Water Resistance Rating | IPX4 |
| Control Method | Touch Control |
| Microphone | Built-in with ENC Noise Reduction |
| Material | Acrylonitrile Butadiene Styrene (ABS) |
| Frequency Response | 20 KHz |
| Sensitivity | 103 dB |
9. Warranty and Support
iMangoo is committed to providing quality products. For any questions or concerns regarding your BT-A12 Wireless Bluetooth Earbuds, please do not hesitate to contact us. Refer to your purchase platform or the official iMangoo website for specific warranty details and customer service contact information.