Introduction
This manual provides detailed instructions for the proper use and maintenance of your Mini503 BH503 Neckband Wireless Bluetooth Headset. Please read this manual carefully before using the device to ensure optimal performance and longevity.

Image: Mini503 BH503 Neckband Wireless Bluetooth Headset. This image shows the headset in a golden color, featuring a neckband design with earbud-style speakers and control buttons on the neckband.
Features
- Wireless Connectivity: Bluetooth V2.1 + EDR Class II for stable connection.
- Audio Profiles: Supports Headset, Handsfree, A2DP, and AVRCP profiles for versatile use.
- Integrated Microphone: For hands-free calling.
- Music Playback: Stereo sound for music enjoyment.
- Micro SD Card Slot: Allows direct music playback from a memory card.
- Neckband Design: Comfortable and secure fit for sports and active use.
- Long Battery Life: Up to 7 hours of music playback.
Specifications
| Bluetooth Version | V2.1 + EDR Class II |
| Frequency | 2400.0-2483.5MHz |
| Supported Profiles | Headset, Handsfree, A2DP, AVRCP |
| Chipset | CSR |
| Operation Range | 10 meters |
| Talk Time | 2-3 Hours |
| Music Playing Time | Up to 7 Hours |
| Stand-by Time | Up to 250 Hours |
| Resistance | 8Ω |
| Sensitivity | 80dB |
| Frequency Response Range | 20-20000Hz |
| Battery Type | Li-polymer rechargeable battery |
| Battery Capacity | 250mA |
| Charging Port | USB |
Setup
Charging the Headset
Before first use, ensure the headset is fully charged. Connect the provided USB Charging Cable to the headset's USB port and plug the other end into a compatible USB power source (e.g., computer USB port, USB wall adapter). The indicator light will typically show red during charging and turn off or change color when fully charged.
Pairing with a Bluetooth Device
- Ensure Headset is Off: Verify that the headset is powered off before starting the pairing process.
- Enter Pairing Mode: Press and hold the Multi-Function Button (MFB) for approximately 7 seconds. The blue LED will flash twice briefly, then the indicator light will flash red and blue alternately. This indicates the headset is in pairing mode.
- Activate Bluetooth on Your Device: On your mobile phone or other Bluetooth-enabled device, go to the Bluetooth settings and activate the Bluetooth function.
- Search for Devices: Your device will scan for available Bluetooth devices. Locate and select "mini 503" from the list.
- Enter Passkey (if prompted): If your device prompts for a passkey, enter "0000". For Bluetooth mobile phones with version V2.1 or above, a passkey may not be required.
- Pairing Complete: Once successfully paired, the headset's indicator light may change or stop flashing, and your device will confirm the connection.
Operating Instructions
Power On/Off
- To Power On: Press and hold the MFB until the indicator light turns on (usually blue).
- To Power Off: Press and hold the MFB until the indicator light turns off (usually red flash).
Music Playback
- After successful pairing, open your music player on your connected device.
- Use the headset's controls (MFB, Volume +/- if available) to play/pause music, skip tracks, and adjust volume. (Specific button functions are not detailed in the product description, refer to device for general Bluetooth headset controls).
- Micro SD Card Playback: Insert a Micro SD card with audio files into the designated slot. The headset should automatically switch to Micro SD card playback mode. Use headset controls to manage playback.
Call Handling
- Answering a Call: Press the MFB once to answer an incoming call.
- Ending a Call: Press the MFB once to end an active call.
- Rejecting a Call: Press and hold the MFB for a few seconds to reject an incoming call.
- Redialing: Double-press the MFB to redial the last number.
Maintenance
- Cleaning: Wipe the headset with a soft, dry cloth. Do not use abrasive cleaners or solvents.
- Storage: Store the headset in a cool, dry place away from direct sunlight and extreme temperatures.
- Water Exposure: This headset is not waterproof. Avoid exposure to water, moisture, or rain.
- Battery Care: To prolong battery life, avoid fully discharging the battery frequently. Charge the headset regularly, even if not in use for extended periods.
Troubleshooting
- Headset not turning on: Ensure the battery is charged. Connect to a power source and try again.
- Cannot pair with device:
- Ensure the headset is in pairing mode (red and blue lights flashing alternately).
- Make sure Bluetooth is enabled on your device and it is within 10 meters of the headset.
- Turn off and on both the headset and your Bluetooth device, then try pairing again.
- Clear previous Bluetooth connections on your device if you have too many stored.
- No sound or poor sound quality:
- Check the volume levels on both the headset and your connected device.
- Ensure the headset is properly paired and connected.
- Move closer to your connected device to avoid interference.
- If playing from Micro SD card, ensure the card is inserted correctly and the audio files are in a compatible format.
- Headset disconnects frequently:
- Ensure the headset and your device are within the 10-meter operating range.
- Avoid obstacles between the headset and your device that might interfere with the Bluetooth signal.
- Check for other devices causing wireless interference.
Warranty and Support
This product is covered by a standard manufacturer's warranty. For specific warranty terms and conditions, please refer to the documentation provided at the time of purchase or contact your retailer. For technical support or further assistance, please contact the vendor or retailer from whom you purchased the product.





