1. Introduction
Thank you for choosing the MOYAWSDGN M91 Wireless Earbuds. These earbuds are designed to provide a high-quality audio experience with advanced features such as Bluetooth 5.4 connectivity, HiFi stereo sound, noise reduction, IPX7 waterproofing, and intuitive touch controls. This manual will guide you through the setup, operation, and maintenance of your new earbuds.

Image 1.1: MOYAWSDGN M91 Wireless Earbuds in their charging case, displaying battery levels on the LED screen.
2. Package Contents
Please ensure all items are present in your package:
- MOYAWSDGN M91 Wireless Earbuds (Left and Right)
- Charging Case
- USB-C Charging Cable
- User Manual
3. Setup
3.1 Initial Charging
Before first use, fully charge the earbuds and the charging case.
- Connect the provided USB-C charging cable to the charging port on the case and to a USB power source.
- The LED display on the charging case will show the current battery percentage. The earbuds will also show individual charging indicators (L and R).
- Charging typically takes approximately 1.5 hours for a full charge.

Image 3.1: The charging case connected via its USB-C port for fast charging.

Image 3.2: Overview of battery performance, indicating 6-8 hours of listening time per charge and over 30 hours total with the charging case.
3.2 Pairing with a Device
The earbuds utilize Bluetooth 5.4 technology for a stable and efficient connection.
- Open the charging case. The earbuds will automatically power on and enter pairing mode.
- On your device (smartphone, tablet, etc.), enable Bluetooth.
- Search for available Bluetooth devices and select "M91" (or similar name) from the list.
- Once connected, a voice prompt will confirm successful pairing. The earbuds will automatically reconnect to the last paired device when taken out of the case.

Image 3.3: Visual representation of Bluetooth 5.4 technology and the LED power display on the charging case.
4. Operating Instructions
4.1 Wearing the Earbuds
The earbuds are designed for an ergonomic and comfortable fit. Gently insert each earbud into your ear canal and rotate slightly to secure them. Ensure a snug fit for optimal sound quality and noise reduction.
4.2 Touch Controls
The M91 earbuds feature intuitive touch controls on each earbud. The following actions can be performed:
- Play/Pause: Single tap on either earbud.
- Next Track: Double tap the right earbud.
- Previous Track: Double tap the left earbud.
- Answer/End Call: Single tap on either earbud during an incoming call.
- Reject Call: Press and hold either earbud for 2 seconds during an incoming call.
- Activate Voice Assistant: Triple tap on either earbud.

Image 4.1: Illustration of the intelligent touch control area on the earbud.
4.3 Sound Features
The M91 earbuds deliver HiFi stereo sound with powerful bass, supported by a 13mm dynamic speaker. They also feature CVC8.0 noise reduction technology for clearer calls.

Image 4.2: Internal structure diagram highlighting the 13mm dynamic speaker responsible for powerful stereo sound.

Image 4.3: Detail of an earbud indicating the placement of the main and second microphones for enhanced noise reduction during calls.
5. Maintenance
5.1 Cleaning
Regularly clean your earbuds and charging case to ensure optimal performance and hygiene.
- Use a soft, dry, lint-free cloth to wipe the earbuds and charging case.
- For earwax or debris in the ear tips, use a small, soft brush or cotton swab.
- Do not use abrasive cleaners, alcohol, or chemical solvents.
5.2 Water Resistance (IPX7)
The M91 earbuds are IPX7 waterproof, meaning they can withstand immersion in water up to 1 meter for 30 minutes. This makes them suitable for workouts and light rain. However, they are not designed for swimming or prolonged water exposure.
- Ensure the earbuds are completely dry before placing them back into the charging case to prevent damage.
- The charging case is not waterproof.
5.3 Storage
Store the earbuds in their charging case when not in use to protect them and keep them charged. Avoid extreme temperatures and direct sunlight.
6. Troubleshooting
If you encounter issues with your earbuds, 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 device from your Bluetooth list and attempt to pair again.
- Place earbuds back in the case, close it, wait a few seconds, then open to re-initiate pairing mode.
- Only one earbud working:
- Ensure both earbuds are charged.
- Place both earbuds back into the charging case, close the lid, and then take them out again simultaneously.
- Check if the earbud's contact points are clean.
- Poor sound quality:
- Ensure the earbuds are properly seated in your ears.
- Clean any debris from the earbud speakers.
- Move closer to your connected device to avoid interference.
- Charging issues:
- Verify the USB-C cable is securely connected to both the case and the power source.
- Ensure the charging contacts on the earbuds and inside the case are clean and free of obstruction.
- Try a different USB-C cable or power adapter.
7. Specifications
| Feature | Specification |
|---|---|
| Model Name | Wireless Earphones |
| Connectivity Technology | Wireless (Bluetooth) |
| Wireless Communication Technology | Bluetooth 5.4 |
| Bluetooth Range | Up to 15 meters |
| Control Type | Touch Control |
| Water Resistance Level | IPX7 Waterproof |
| Noise Control | Sound Isolation (CVC8.0 Noise Reduction for calls) |
| Ear Placement | In Ear |
| Form Factor | In Ear |
| Material | Plastic |
| Item Weight | 2.39 ounces |
| Product Dimensions | 1.97 x 2.36 x 0.79 inches |
| Included Components | Cable, Charging Station, User Manual |
8. Warranty and Support
8.1 Warranty Information
MOYAWSDGN products are covered by a limited warranty against manufacturing defects from the date of purchase. Please retain your proof of purchase for warranty claims. The warranty does not cover damage caused by misuse, accidents, unauthorized modifications, or normal wear and tear.
8.2 Customer Support
For further assistance, technical support, or warranty inquiries, please contact MOYAWSDGN customer service through the retailer where the product was purchased or refer to the contact information provided on the product packaging or official website.