1. Introduction
Thank you for choosing the Matast B02 Bluetooth 5.4 Sport Earbuds. These wireless in-ear headphones are designed to provide a superior audio experience with advanced features for active lifestyles. Enjoy crystal-clear HiFi stereo sound, extended battery life, and reliable connectivity, all within a durable and comfortable design.

Image: The Matast B02 Bluetooth 5.4 Sport Earbuds in their charging case, showcasing the LED battery display.
2. What's in the Box
Please check the contents of your package to ensure all items are present:
- 2 x Wireless Sport Earbuds (Left and Right)
- 1 x Charging Case
- 1 x Type-C Fast Charging Cable
- 6 x Ear Tips (S, M, L sizes, including those pre-installed on earbuds)
- 1 x User Manual

Image: A visual representation of all items included in the Matast B02 Earbuds package, laid out neatly.
3. Product Overview
Familiarize yourself with the key components and features of your Matast B02 Earbuds.
3.1 Earbud Components
- Flexible Ear Hooks: For secure and comfortable fit during activities.
- Touch Control Area: For managing playback, calls, and voice assistant.
- LED Indicator: Shows pairing status and battery level.
- Microphones: 4 HD microphones with ENC noise cancellation for clear calls.
- Speaker Driver: 13mm dynamic drivers for HiFi stereo sound.

Image: An exploded view diagram illustrating the 13mm dynamic drivers and internal structure responsible for HiFi stereo sound in the Matast B02 Earbuds.
3.2 Charging Case
- Earbud Charging Slots: Securely holds and charges earbuds.
- LED Digital Display: Shows battery percentage of the case and individual earbud charging status.
- USB-C Charging Port: For fast charging the case.

Image: The Matast B02 Earbuds and charging case, highlighting the 50-hour total battery life and 10-hour single charge capability, along with the Type-C fast charging port.
4. Setup
4.1 Charging the Earbuds and Case
Before first use, fully charge the earbuds and the charging case.
- Place the earbuds into the charging case. Ensure they are correctly seated in their respective slots (L for left, R for right).
- Connect the Type-C charging cable to the charging port on the case and the other end to a USB power source (e.g., wall adapter, computer USB port).
- The LED digital display on the charging case will show the battery percentage of the case and the charging status of each earbud.
- A full charge provides up to 10 hours of playtime for the earbuds, and the charging case provides an additional 4 charges, totaling 50 hours of playtime.
4.2 Pairing with Your Device
The Matast B02 Earbuds feature one-step pairing for convenience.
- Open the charging case. The earbuds will automatically power on and enter pairing mode.
- On your device (smartphone, tablet, etc.), enable Bluetooth.
- Search for "B02" in the list of available Bluetooth devices and select it to connect.
- Once connected, the earbuds will automatically reconnect to the last paired device when removed from the charging case.

Image: A smartphone screen showing the Matast B02 Earbuds listed as an available Bluetooth device, demonstrating the one-step pairing process.
5. Operating Instructions
5.1 Wearing the Earbuds
For optimal sound quality and comfort, ensure a proper fit.
- Choose the correct size ear tips (S, M, L) that provide a snug fit in your ear canal.
- Place the earbud into your ear, then gently adjust the flexible ear hook over your ear for a secure and comfortable fit.

Image: A visual guide demonstrating the ergonomic design of the Matast B02 Earbuds, showing how they fit securely with flexible ear hooks and different ear tip sizes.
5.2 Smart Touch Controls
The earbuds feature intuitive touch controls on the outer surface of each earbud.
| Action | Function |
|---|---|
| Double Tap L/R | Play / Pause Music, Answer / End Call |
| Triple Tap L/R | Activate Voice Assistant |
| Single Tap L | Volume Down |
| Single Tap R | Volume Up |
| Press and Hold L (2s) | Previous Song |
| Press and Hold R (2s) | Next Song |
| Press and Hold L/R (2s during incoming call) | Reject Call |

Image: A visual guide detailing the smart touch control functions of the Matast B02 Earbuds, including playback, call management, and voice assistant activation.
6. Maintenance
6.1 Cleaning
- Regularly clean the earbuds and charging case with a soft, dry, lint-free cloth.
- Remove ear tips and clean them with mild soap and water, then dry thoroughly before reattaching.
- Do not use abrasive cleaners or solvents.
6.2 Waterproofing (IP7)
The Matast B02 Earbuds are IP7 waterproof, meaning they can withstand immersion in water up to 1 meter for 30 minutes. This makes them suitable for workouts and light rain, but they are not recommended for swimming or showering.
- Ensure the charging port cover (if applicable) is securely closed before exposure to water.
- After exposure to water, wipe the earbuds dry before placing them back in the charging case to prevent damage to the charging contacts.
6.3 Storage
- Store the earbuds in their charging case when not in use to protect them and keep them charged.
- Store in a cool, dry place away from extreme temperatures and direct sunlight.
7. Troubleshooting
If you encounter any issues with your Matast B02 Earbuds, please refer to the following common solutions:
- Earbuds not pairing/connecting:
Ensure Bluetooth is enabled on your device. Place earbuds back in the case, close the lid, then open it again to re-enter pairing mode. Forget "B02" from your device's Bluetooth list and try pairing again. Ensure earbuds are charged. - Only one earbud working:
Place both earbuds back in the charging case, close the lid, and then open it again. Ensure both earbuds are charged. If the issue persists, try resetting the earbuds (refer to manufacturer's website or contact support for specific reset instructions if not in manual). - No sound or low volume:
Check the volume level on both your device and the earbuds. Ensure earbuds are properly seated in your ears. Try cleaning the ear tips and speaker mesh. - Charging case not charging:
Ensure the USB-C cable is securely connected to both the case and the power source. Try a different charging cable or power adapter. - Poor call quality:
Ensure the microphones are not obstructed. Move closer to your connected device. Reduce background noise if possible.
8. Specifications
| Feature | Specification |
|---|---|
| Model | B02 |
| Bluetooth Version | 5.4 |
| Playtime (Single Charge) | Up to 10 hours |
| Total Playtime (with Charging Case) | Up to 50 hours |
| Charging Port | USB-C |
| Waterproof Rating | IP7 |
| Microphones | 4 HD Microphones with ENC Noise Cancellation |
| Speaker Drivers | 13mm Dynamic Drivers |
| Control Type | Touch Control |
| Weight | 140 grams (total package) |
| Dimensions (Package) | 10.2 x 9.1 x 3.7 cm |
| Battery Type | Lithium Polymer |
9. Warranty and Support
For warranty information and customer support, please refer to the warranty card included in your product packaging or contact the retailer where you purchased the Matast B02 Earbuds. You may also visit the official Matast website for further assistance and frequently asked questions.
Please retain your proof of purchase for any warranty claims.