Introduction
Thank you for choosing the Matast C16 Wireless Earbuds. This manual provides detailed instructions for setting up, operating, and maintaining your earbuds to ensure optimal performance and longevity. Please read this manual thoroughly before use and retain it for future reference.
Important Safety Information
To prevent damage to the product or injury to yourself, please observe the following safety precautions:
- Do not disassemble or modify the earbuds or charging case.
- Keep the device away from extreme temperatures, humidity, and corrosive substances.
- Avoid prolonged exposure to high volume levels to prevent hearing damage.
- Clean the earbuds and charging contacts regularly to maintain optimal performance.
- Keep out of reach of children and pets.
Package Contents
Verify that all items are present in your package:

This image displays the Matast C16 wireless earbuds, their charging case, a USB-C charging cable, and the user manual, illustrating the complete package contents.
- Wireless Earbuds (L/R)
- Super Portable Charging Case with LED Power Display
- USB-C Fast Charging Cable
- User Manual
- Eartips (S, M, L sizes)
Product Overview
Familiarize yourself with the components of your Matast C16 Wireless Earbuds:

A detailed view of the Matast C16 wireless earbuds, showcasing their ergonomic design with ear hooks and the compact charging case with a digital display.
- Earbuds: Left and Right earbuds with integrated ear hooks and touch control areas.
- Charging Case: Portable case for charging and storing earbuds, featuring an LED digital display for battery status.
- USB-C Port: Located on the charging case for power input.
- LED Indicators: On earbuds and case to show charging status and connection.
Setup
1. Charging the Case and Earbuds
Before first use, fully charge the charging case and earbuds.
- Connect the provided USB-C cable to the charging port on the case and a power source.
- The LED digital display on the case will show the battery percentage, flashing during charging.
- Place the earbuds into the charging case. The earbuds will automatically begin charging, indicated by their LED lights.
- A full charge for the case takes approximately 1.5 hours. Earbuds provide up to 8 hours of playback per charge, and the case can recharge them six times for a total of 60 hours playtime.

This image highlights the Matast C16 earbuds' long battery life, showing 1.5 hours for case charging, 8 hours of earbud playtime, and 50 hours total with the charging case. It also depicts the USB-C charging port and LED displays for charge levels.
2. Pairing with Your Device
The earbuds utilize Bluetooth 5.4 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 and search for available devices.
- Select "C16" from the list of found devices to connect.
- Once paired, the earbuds will automatically reconnect to the last paired device when removed from the case.

This image illustrates the simple one-step pairing process of the Matast C16 earbuds, showing the earbuds in their open case and a smartphone screen displaying 'C16' as an available Bluetooth device for connection.

This image emphasizes the upgraded Bluetooth 5.4 technology for high transmission and low latency, alongside automatic pairing and wide compatibility with various devices like smartphones, tablets, and laptops.
3. Wearing the Earbuds
For optimal sound quality and comfort, ensure a secure fit.
- Choose the correct size ear tips (S, M, L) for your ears.
- Place the ear hook over your ear.
- Gently insert the earbud into your ear canal.
- Rotate the earbud slightly to find a comfortable and secure angle.

This image illustrates the Matast C16 earbuds' design for sports and comfortable fit, featuring flexible ear hooks and showing the three sizes of ear tips (S, M, L) for customization.

This image provides a visual guide on how to wear the earbuds for a secure and comfortable fit, showing three steps: placing the ear hook, inserting the earbud, and rotating for adjustment.
Operating the Earbuds
1. Touch Controls
The Matast C16 earbuds feature intuitive touch controls on each earbud. The functions are as follows:

This image illustrates the various touch control gestures for the Matast C16 earbuds, including single tap for play/pause, double tap for switching songs, and long press for volume adjustment, call management, and voice assistant activation.
| Action | Function |
|---|---|
| Single Tap (L/R) | Play/Pause music, Answer Call |
| Double Tap (L/R) | Switch Song (Left: Previous, Right: Next) |
| Triple Tap (L/R) | Activate Voice Assistant |
| Press and Hold for 2s (L/R) | Reject/Hang Up Call, Volume - (Left), Volume + (Right) |
2. Single and Dual Mode
The earbuds support both single and dual-earbud usage.
- Dual Mode: Use both earbuds for immersive stereo sound.
- Single Mode: Use only one earbud (left or right) for mono audio. This is useful for awareness of surroundings or extending total listening time by alternating earbuds. Simply take one earbud out of the case; the other can remain in the case or be turned off.

This image demonstrates the flexibility of the Matast C16 earbuds, allowing users to enjoy music in either single mode (using one earbud) or dual mode (using both earbuds for stereo sound).
Maintenance
Proper maintenance ensures the longevity and performance of your earbuds.
- Cleaning: Regularly clean the earbuds, ear tips, and charging contacts with a soft, dry, lint-free cloth. Do not use harsh chemicals or abrasive materials.
- Storage: When not in use, store the earbuds in their charging case to protect them from dust and damage.
- Water Resistance: The earbuds are IP7 waterproof, making them resistant to sweat, rain, and accidental water exposure. However, they are not designed for swimming or submersion. Ensure earbuds are dry before placing them back in the charging case.

This image emphasizes the IP7 waterproof and sweatproof capabilities of the Matast C16 earbuds, indicating their superior protection against rain, sweat, and during exercise or workouts.
Troubleshooting
If you encounter issues, refer to the following common problems and solutions:
- Earbuds not pairing:
- Ensure Bluetooth is enabled on your device. Make sure the earbuds are charged and out of the case. Try forgetting the device in your Bluetooth settings and re-pairing.
- Only one earbud working:
- Place both earbuds back into the charging case, close the lid, then open it again. Ensure both earbuds are charged. Check your device's audio settings to ensure mono audio is not enabled.
- Earbuds not charging:
- Ensure the charging cable is securely connected to both the case and power source. Check if the charging contacts on the earbuds and case are clean and free of debris. Verify the charging case has power.
- Poor sound quality:
- Ensure the earbuds are properly seated in your ears and you are using the correct size ear tips. Clean any earwax or debris from the earbud nozzles. Move closer to your connected device to avoid interference.
- Touch controls unresponsive:
- Ensure your fingers are clean and dry. Try restarting the earbuds by placing them in the case and taking them out again.
Specifications
Key technical specifications for the Matast C16 Wireless Earbuds:
| Feature | Detail |
|---|---|
| Model Name | C16 |
| Connectivity Technology | Wireless (Bluetooth 5.4) |
| Bluetooth Range | 15 Meters |
| Audio Driver Type | Dynamic Driver |
| Audio Driver Size | 13 Millimeters |
| Frequency Range | 18Hz-25kHz |
| Battery Life (Earbuds) | 8 Hours |
| Total Playtime with Case | 60 Hours |
| Charging Time (Case) | 1.5 Hours |
| Water Resistance Level | IP7 Waterproof |
| Control Type | Touch Control |
| Noise Control | ENC Noise Cancelling (for calls) |
| Ear Placement | In Ear with Earhook |
| Material | Plastic |
| Item Weight | 0.004 ounces (per earbud) |
Warranty and Support
Matast products are designed for reliability and performance. For warranty information or technical support, please refer to the contact details provided on the product packaging or visit the official Matast website. Please retain your proof of purchase for any warranty claims.