Introduction
This manual provides detailed instructions for the proper use and maintenance of your Matast C16 Wireless Earbuds. Please read this manual thoroughly before using the product to ensure optimal performance and longevity.
What's in the Box

Image: Contents of the Matast C16 Wireless Earbuds package.
- Wireless Earbuds (Left and Right)
- Wireless Charging Case
- USB-C Charging Cable
- User Manual
- Ear Tips (S, M, L sizes)
Product Overview

Image: Key features of the Matast C16 Wireless Earbuds.
The Matast C16 Wireless Earbuds are designed for sports and daily use, featuring advanced audio technology and a durable, ergonomic design. Key features include:
- Hi-Fi Sound Quality: Equipped with 14.2mm graphene drivers for clear highs and deep bass.
- ENC Noise Cancelling Mic: Four high-definition microphones enhance vocal clarity during calls by reducing external noise.
- Bluetooth 5.4: Provides stable connectivity, faster transfer speeds, lower power consumption, and reduced latency.
- Extended Playback: Up to 8 hours per charge, with a total of 60 hours using the charging case.
- IP7 Waterproof: Resistant to sweat, rain, and accidental water exposure, suitable for workouts.
- Ergonomic Design: Flexible 45° ear hooks and multiple ear tip sizes ensure a secure and comfortable fit.
- Smart Touch Control: Intuitive controls for music playback, calls, and voice assistant activation.
Setup
1. Initial Charging

Image: Charging case with digital display and USB-C port.
- Before first use, place both earbuds into the 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 battery percentage and charging status. A full charge for the case takes approximately 1.5 hours.
- Ensure the earbuds are fully charged (approximately 1.5 hours) before initial pairing.
2. Wearing the Earbuds

Image: Steps for wearing the earbuds securely.
- Choose the correct ear tip size (S, M, L) for a comfortable and secure fit.
- Place the flexible ear hook over your ear.
- Gently insert the earbud into your ear canal.
- Rotate the earbud slightly to find the most comfortable and secure position.
3. Pairing with a Device

Image: Automatic pairing and device compatibility.
- First-time Pairing: Open the charging case. The earbuds will automatically power on and enter pairing mode.
- On your device (smartphone, tablet, computer), go to the Bluetooth settings.
- Search for available devices and select "C16" from the list.
- Once connected, you will hear a confirmation tone, and the earbuds will be ready for use.
- Automatic Reconnection: After initial pairing, the earbuds will automatically reconnect to the last paired device when you open the charging case.
Operating Instructions
1. Power On/Off
- Power On: Open the charging case, and the earbuds will automatically power on.
- Power Off: Place the earbuds back into the charging case and close the lid. They will automatically power off and begin charging.
2. Touch Controls

Image: Detailed touch control functions.
| Action | Left Earbud (L) | Right Earbud (R) |
|---|---|---|
| Play/Pause | Tap once (x1) | Tap once (x1) |
| Next Song | Double Tap (x2) | Double Tap (x2) |
| Previous Song | Triple Tap (x3) | Triple Tap (x3) |
| Volume Up | Press and hold (2S) | N/A |
| Volume Down | N/A | Press and hold (2S) |
| Answer Call | Tap once (x1) | Tap once (x1) |
| Reject/End Call | Press and hold (2S) | Press and hold (2S) |
| Activate Voice Assistant | Triple Tap (x3) | Triple Tap (x3) |
3. Single & Dual Mode

Image: Demonstrating single and dual earbud usage.
- Dual Mode: Both earbuds are used together for immersive stereo sound. This is the default mode after pairing.
- Mono Mode: You can use either the left or right earbud independently. Simply take one earbud out of the case, and it will connect to your device. The other earbud can remain in the case or be used by another person.
Maintenance
Proper maintenance ensures the longevity and optimal performance of your earbuds.
- Cleaning: Regularly clean the ear tips and charging contacts on both the earbuds and the charging case with a soft, dry, lint-free cloth. Do not use harsh chemicals or abrasive materials.
- Water Exposure: While the earbuds are IP7 waterproof, avoid prolonged submersion in water. Ensure earbuds are dry before placing them back into the charging case to prevent damage to charging contacts.
- Storage: When not in use, store the earbuds in their charging case to protect them from dust and physical damage. Store in a cool, dry place away from extreme temperatures.
- Battery Care: To preserve battery life, avoid fully discharging the earbuds and charging case frequently. Charge them regularly, even if not in constant use.
Troubleshooting
If you encounter issues with your Matast C16 Wireless Earbuds, refer to the following common solutions:
| Problem | Solution |
|---|---|
| Earbuds not pairing with device |
|
| Only one earbud working |
|
| No sound or low volume |
|
| Charging case not charging |
|
Specifications
| Feature | Detail |
|---|---|
| Model Number | C16 |
| Bluetooth Version | 5.4 |
| Bluetooth Range | Up to 15 meters (50 feet) |
| Audio Driver Size | 14.2mm Graphene Drivers |
| Frequency Range | 18Hz-25kHz |
| Earbud Playtime | Up to 8 hours per charge |
| Total Playtime (with case) | Up to 60 hours |
| Earbud Charge Time | Approx. 1.5 hours |
| Case Charge Time | Approx. 1.5 hours |
| Water Resistance | IP7 Waterproof |
| Control Type | Touch Control |
| Microphone | ENC Noise Cancelling Mic |
| Material | Plastic |
| Weight | 1 Grams (per earbud) |
Warranty and Support
Matast provides a warranty for this product. Please refer to the warranty card included in your package for specific terms and conditions. For technical support, troubleshooting assistance, or warranty claims, please contact Matast customer service through the retailer where the product was purchased or visit the official Matast website.
Online Resources: For additional information and support, you may visit the Matast store on Amazon: Matast Store