Monster BC300 Open Ear Bone Conduction Wireless Earphone

1. Introduction

The Monster BC300 Open Ear Bone Conduction Wireless Earphone is designed for active lifestyles, offering a unique open-ear listening experience, IPX8 waterproof rating for swimming, and a built-in 32GB memory for standalone music playback. With Bluetooth 6.0 connectivity and a secure ear-hook design, it's perfect for various sports and outdoor activities.

2. Safety Warnings and Precautions

To ensure your safety and extend the service life of this product, please strictly follow the warnings below:

2.1 Environmental Warnings

• Do not use this product in extremely high or low temperatures, or in dusty or humid environments.
• Avoid direct sunlight, fire exposure, or any overheating conditions.
• In environments with strong wireless signals or dense crowds (such as airports, stations, exhibitions, etc.), intermittent connection or interference may occur. This is within normal range. Please continue to use the device later or change the usage environment.

2.2 Operational Safety Warnings

• Do not drop, strike, or subject the product to strong vibrations.
• Do not disassemble or modify the device without authorization to avoid hazards or damage.
• If any abnormal condition occurs, stop using the product immediately and contact your distributor.

2.3 Battery and Charging Warnings

• When the charging case indicator shows low battery, please recharge in time. If the product is not used for a long period, please recharge it at least once every 30 days.
• Use power adapters that comply with national standards and are CCC-certified.
• The earbuds contain built-in batteries. Do not expose them to high temperatures or flammable environments.
• If the charging port of the earbuds contains foreign objects or has poor contact, gently clean the charging port with a cotton swab dipped in alcohol. Regular cleaning is recommended to ensure proper charging and power-on/off functions.

2.4 Important Notes

• If there are updates or changes to product functions, please refer to the official website or the sales page for the latest information.
• Please keep this manual for future reference.

3. Package Contents

Please check the package contents upon unboxing:

1. Monster Open Ear BC300 Headphones × 1
2. Magnetic Charging Cable × 1
3. Packaging Box × 1
4. Certificate of Conformity × 1
5. User Manual × 1

4. Setup

4.1 Charging the Headphones

For better enjoyment, fully charge the headphone before use. A USB charging cable (charge only) is included for standard USB compatible devices. Please use a 5V/1A or above power adapter (not included).

• Caution: Use compatible standard 5 volt power adapter ONLY. Other incompatible chargers may cause damages. Do not use if the connector or device is wet or damaged.
• Charging Indicator: The red indicator light is on during charging. It goes off after being fully charged.

4.2 Power On/Off

• To Turn On: Press and hold the "MFB" button for 3 seconds. You will hear a power on tone, and the white light remains on for 2 seconds.
• To Turn Off: Press and hold the "MFB" button for 5 seconds. You will hear a power off tone, and the red light stays on for 2 seconds.
• Auto-Off: If no Bluetooth device is connected, the headphone will turn off in 3 minutes with a power off tone.

4.3 Bluetooth Pairing

When powered on, the headphone will automatically enter pairing mode for connection.

1. Turn on Bluetooth function on your phone or device.
2. Search for "Monster Open Ear BC300" in the list of available devices.
3. Select "Monster Open Ear BC300" to pair.
4. When the headphone is connected, a prompt tone will be heard, and the red and white lights will flash alternately before turning off.

4.4 Dual Device Smart Connection

The BC300 supports simultaneous connection with two Bluetooth devices.

1. Connect the headphones to the first phone.
2. Turn off the headphones and disable Bluetooth on the first phone.
3. Turn on the headphones again and connect them to a second phone.
4. After successful connection to the second phone, re-enable Bluetooth on the first phone and tap "Monster Open Ear BC300" to reconnect.

5. Operating Instructions

The Monster BC300 features mechanical buttons for easy control.

5.1 Music Control

• Play/Pause: Click the "MFB" button.
• Previous Song: Long press the "-" button (when connected to a mobile phone).
• Next Song: Long press the "+" button (when connected to a mobile phone).

5.2 Call Control

• Answer a Call: Short press the "MFB" button.
• End the Call: Short press the "MFB" button.
• Reject a Call: Long press the "MFB" button.

5.3 Volume Control

• Volume Up: Short press the "+" button.
• Volume Down: Short press the "-" button.

5.4 Mode Switching (TF Card / Bluetooth)

• Switch Mode: Double-click the "MFB" button.
• Note: In TF card mode, you can connect the headphones to a computer via the magnetic charging cable to transfer songs and store them on the headphones' internal memory.

5.5 Voice Assistant

• Activate/Deactivate: Triple-click the "MFB" button.

5.6 Reset to Factory Settings

To clear pairing information and restore factory settings:

1. While the device is powered on, continuously press the "MFB" button 5 times.
2. The headphones will then restart, clearing all pairing information.

6. Maintenance

• Cleaning: If the charging port has foreign objects or poor contact, gently clean it with a cotton swab dipped in alcohol. Regular cleaning is recommended to ensure proper charging and power-on/off functions.
• Battery Care: If the product is not used for a long period, recharge it at least once every 30 days to maintain battery health.
• Storage: Store the headphones in a cool, dry place away from direct sunlight and extreme temperatures.

7. Troubleshooting

If you encounter any issues with your Monster BC300 headphones, please refer to the following common solutions:

• No Power: Ensure the headphones are fully charged. If not used for a long time, charge for at least 30 minutes.
• Cannot Pair: Make sure the headphones are in pairing mode (red and white lights flashing alternately). Turn off and on your device's Bluetooth, then try pairing again. If issues persist, try resetting the headphones to factory settings (Section 5.6).
• Intermittent Connection/Interference: This can occur in environments with strong wireless signals or dense crowds. Move to an area with less interference or try again later. Ensure no physical obstructions are between the headphones and the connected device.
• Charging Issues: Clean the magnetic charging contacts on both the headphones and the cable with a dry, soft cloth or an alcohol-dipped cotton swab to ensure good contact.
• No Sound: Check the volume levels on both the headphones and your connected device. Ensure the correct playback mode (Bluetooth or TF Card) is selected.
• Underwater Playback: Remember that Bluetooth signals cannot transmit underwater. For swimming, please use the internal 32GB memory mode.

8. Specifications

9. User Tips

• For Swimming: Always switch to the internal 32GB memory mode before entering water, as Bluetooth signals do not transmit effectively underwater.
• Secure Fit: The ergonomic ear-hook and nickel-titanium memory alloy frame are designed for a secure fit. Ensure they are properly positioned for maximum comfort and stability during intense activities.
• Quick Charge: A 10-minute charge can provide approximately 90 minutes of playback, useful for quick top-ups before a workout.
• Awareness: The open-ear bone conduction design allows you to remain aware of your surroundings, which is beneficial for outdoor sports like cycling and running.

10. Warranty and Support

For warranty claims, technical support, or any product-related inquiries, please contact your original retailer or the manufacturer directly. Keep your proof of purchase for any warranty services.

A PDF version of the user manual is available for download: User Manual (PDF)

11. Product Video