1. Introduction
The YYK520 Wireless Bluetooth Ear-Hook Earphone is designed for versatile use in various environments such as business, office, car driving, sports, running, and gym activities. Featuring Bluetooth 5.1 technology, it offers stable connectivity and clear audio for calls and music. This manual provides detailed instructions for setup, operation, maintenance, and troubleshooting to ensure optimal performance of your earphone.
2. Package Contents
Depending on your purchase, your package may include:
- 1x YYK520 Earphone
- 1x Charging Compartment (optional, for "earphone kit" package)
- 1x Charging Cable
- 2x Ear Caps (spare)
- 1x User Manual
Image: YYK520 Earphone and Charging Case (Red variant shown).
Image: YYK520 Earphone Kit (White variant shown) including earphone, charging case, charging cable, and spare ear caps.
3. Product Overview
Familiarize yourself with the components and controls of your YYK520 earphone.
Diagram: Earphone and Charging Case Components. Labels include: MFB (Multi-Function Button), ON-OFF key, Indicator light, Volume+/-, Intelligent digital display (on charging case), Spare ear cap.
Diagram: Earphone Controls and Ports. Labels include: Type-C charging port, Pause/Play, Answer, Hang up, Call, Volume+, Next Song, Volume-, Last Song, Third party call handover.
Diagram: Ergonomic Design. Features include: Ergonomic design for extended usage, Rotatable to fit both ears, Extendable earhook for a wide range of ear shapes, Microphone location.
4. Setup Instructions
4.1 Charging the Earphone and Charging Compartment
Before first use, fully charge your earphone and its charging compartment.
- Connect the provided Type-C charging cable to the charging compartment's Type-C port and a DC 5V power source (e.g., USB wall adapter, computer USB port).
- Place the earphone into the charging compartment. The intelligent digital display on the charging compartment will show the charging status.
- The earphone takes approximately 1 hour to fully charge. The charging compartment takes approximately 2 hours to fully charge.
Video: Demonstration of charging the earphone and charging case, and general product usage.
4.2 Wearing the Earphone
The YYK520 features an ergonomic ear-hook design for comfortable and secure fit.
- Adjust the earhook: The earhook is rotatable and extendable. Adjust it to comfortably fit over your ear.
- Position the earbud: Gently insert the earbud into your ear canal.
- Ensure a snug fit: The soft ear caps should provide a comfortable and secure seal. You can replace the ear caps with the spare ones if needed for a better fit.
4.3 Bluetooth Pairing
The earphone uses Bluetooth 5.1 for a fast and stable connection.
- **Power On**: Press and hold the ON-OFF key on the earphone until the indicator light flashes, indicating it's in pairing mode.
- **Activate Bluetooth**: On your mobile device (smartphone, tablet, laptop), go to the Bluetooth settings and turn Bluetooth ON.
- **Search for Devices**: Your device will scan for available Bluetooth devices. Select "YYK520" from the list.
- **Connect**: Once selected, the earphone will connect to your device. The indicator light on the earphone will change (e.g., solid blue or slow flash) to confirm a successful connection.
The earphone should automatically reconnect to the last paired device when powered on and within range.
5. Operating Instructions
5.1 Basic Functions
- **Power On/Off**: Use the ON-OFF key.
- **Volume Control**: Use the Volume+/- buttons to adjust the listening volume.
- **Play/Pause Music**: Press the MFB (Multi-Function Button) once.
- **Next Song**: Press the Volume+ button for a short duration.
- **Previous Song**: Press the Volume- button for a short duration.
5.2 Call Management
- **Answer Call**: Press the MFB once.
- **Reject Call**: Press and hold the MFB.
- **Hang Up Call**: Press the MFB once during a call.
- **Redial Last Number**: Double-click the MFB.
- **Call Mute**: Double-click the MFB during an active call.
- **Third-Party Call Handover**: Refer to your phone's specific instructions for handling multiple calls, often managed via the MFB.
The built-in 10mm microphone ensures clear voice transmission during calls.
6. Maintenance
- **Cleaning**: Regularly wipe the earphone and charging compartment with a soft, dry cloth. Avoid using harsh chemicals or abrasive materials.
- **Storage**: Store the earphone in its charging compartment when not in use to protect it and keep it charged.
- **Battery Care**: To prolong battery life, avoid fully discharging the earphone frequently. Charge it regularly, even if not used for extended periods.
- **Avoid Water**: The earphone is not waterproof. Avoid exposure to water, moisture, or extreme temperatures.
7. Troubleshooting
If you encounter issues with your YYK520 earphone, try the following steps:
- **No Power**: Ensure the earphone and charging compartment are fully charged.
- **Cannot Pair**:
- Make sure the earphone is in pairing mode (indicator light flashing).
- Turn off and on Bluetooth on your device.
- Delete "YYK520" from your device's Bluetooth list and attempt to re-pair.
- Ensure the earphone is within the 10m/32ft wireless transmission distance of your device.
- **No Sound/Low Volume**:
- Check the volume levels on both the earphone and your connected device.
- Ensure the earphone is properly connected to your device.
- Try playing audio from a different application or source.
- **Call Quality Issues**:
- Ensure the microphone is not obstructed.
- Move closer to your connected device to improve signal strength.
- Check for environmental interference.
8. Specifications
| Feature | Specification |
|---|---|
| Model | YYK520 |
| Wireless BT Version | BLE5.1 |
| Working Time | Approx. 8-10 hours |
| Standby Time | Approx. 180 hours |
| Earphone Charging Time | Approx. 1 hour |
| Charging Compartment Charging Time | Approx. 2 hours |
| Charging Voltage | DC 5V |
| Charging Interface | Type-C (Android compatible) |
| Speaker Diameter | 10mm |
| Earphone Battery Capacity | 60mAh |
| Charging Compartment Capacity | 500mAh |
| Wireless Transmission Distance | Less than 10m / 32ft |
| Frequency Range | 20Hz-20KHz |
| SNR | ≥90dB |
| Sensitivity | -85dBm |
| Control Type | Button |
| On-screen Display | Charging/Battery display (on charging compartment) |
| Applicable Modes | Single Ear, Hanging Ear, In-ear Type |
| Material | Plastic |
| Packing Size | Approx. 150x80x28 mm / 5.90x3.14x1.10 inch |
Image: Approximate dimensions of the earphone and charging case.
Image: Exploded view showing the internal components of the earphone speaker.
9. Warranty & Support
This product is covered by the standard manufacturer's warranty. For warranty claims, technical support, or further assistance, please contact the seller or manufacturer directly with your purchase details.
10. User Tips
- **Comfortable Fit**: The ear-hook design is intended for comfort during extended wear. Take time to adjust the rotatable and extendable earhook to find the most secure and comfortable fit for your ear.
- **Hands-Free Convenience**: Utilize the multi-function button for quick call management, including answering, rejecting, hanging up, and muting calls, especially useful when driving or exercising.
- **Battery Monitoring**: Keep an eye on the intelligent digital display on the charging compartment to know the battery level and ensure your earphone is always ready for use.
