Kaidi KD-772 Wireless Earphones User Manual

1. Introduction

Thank you for choosing the Kaidi KD-772 Wireless Earphones. These True Wireless Stereo (TWS) earphones are designed to provide a superior audio experience with advanced features and comfortable use. This manual will guide you through the setup, operation, and maintenance of your new earphones.

The KD-772 features advanced Bluetooth 5.3 technology for stable connectivity and incredible stereo sound. Its excellent noise-canceling function allows you to focus on your music, while the built-in microphone ensures clear phone calls. A key advantage of these earphones is their minimal audio-visual delay, providing a seamless experience when watching videos.

2. Package Contents

Please check the box for the following items:

• 2 x Earphones (1 Left, 1 Right)
• 1 x Charging Case
• 1 x USB Charging Cable
• 1 x User Manual

3. Specifications

Earphone Specifications:

• Bluetooth Version: V5.3
• Support Protocols: HFP, HSP, A2DP, AVRCP
• Wireless Transmission Distance: 10 meters (without obstacles)
• Talk Time: 3-4 hours (at 80% volume)
• Music Playback Time: 3-4 hours (at 80% volume)
• Charging Time: Approximately 1.5 hours
• Standby Time: Approximately 100 hours
• Earphone Battery Capacity: 3.7V/40mAh
• Charging Case Battery Capacity: 3.7V/320mAh
• Material: TPU
• Style: In-ear
• Microphone: Yes
• Wireless Type: Bluetooth

Driver Specifications:

• Driver Unit: 13mm
• Sensitivity: 105dB
• Impedance: 32 Ohms
• Frequency Response: 20Hz-20000Hz

4. Initial Setup

4.1 Charging the Earphones and Case

1. Place both earphones into the charging case.
2. Connect the USB charging cable to the charging port on the case and plug the other end into a USB power source (e.g., computer, wall adapter).
3. The indicator light on the charging case will show the charging status. Ensure both earphones and the case are fully charged before first use.

4.2 Pairing with a Bluetooth Device

1. Open the charging case. The earphones will automatically power on and enter pairing mode.
2. Enable Bluetooth on your smartphone or other audio device.
3. Search for available Bluetooth devices and select "KD-772" from the list.
4. Once connected, you will hear a confirmation tone, and the earphones will be ready for use.

5. Operating Instructions

5.1 Power On/Off

• Power On: Open the charging case, and the earphones will automatically power on.
• Power Off: Place the earphones back into the charging case and close the lid. They will automatically power off and begin charging.

5.2 Smart Touch Controls

The KD-772 earphones feature smart touch controls for easy management of music and calls. Specific touch gestures may vary slightly, but common functions include:

• Play/Pause: Single tap on either earphone.
• Next Track: Double tap on the right earphone.
• Previous Track: Double tap on the left earphone.
• Answer/End Call: Single tap on either earphone during an incoming call.
• Reject Call: Press and hold either earphone for 2 seconds during an incoming call.
• Activate Voice Assistant: Triple tap on either earphone.
• Game Mode/Music Mode: The earphones support switching between game mode (low latency) and music mode. Refer to the quick start guide for specific touch gestures to toggle this feature.

6. Maintenance

6.1 Cleaning

• Use a soft, dry, lint-free cloth to clean the earphones and charging case.
• Do not use abrasive cleaners, solvents, or aerosol sprays.
• Keep the charging contacts on both the earphones and the case clean and free of debris.

6.2 Storage

• Always store the earphones 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.

6.3 Battery Care

• Charge the earphones and case regularly, even if not used frequently, to maintain battery health.
• Avoid fully discharging the battery for extended periods.

7. Troubleshooting

• No Sound:
  Ensure the earphones are properly paired with your device. Check the volume level on both your device and the earphones. Make sure the earphones are charged.
• Earphones Not Charging:
  Verify that the charging cable is securely connected to both the case and the power source. Ensure the charging contacts on the earphones and inside the case are clean. Try a different USB port or power adapter.
• Pairing Issues:
  Turn off Bluetooth on your device and turn it back on. Forget the "KD-772" from your device's Bluetooth list and attempt to re-pair. Ensure the earphones are in pairing mode (open case).
• Only One Earphone Working:
  Place both earphones back into the charging case, close the lid, wait a few seconds, then open it again. This often re-syncs them. Ensure both earphones are charged. If the issue persists, try resetting the earphones (refer to the quick start guide for specific reset instructions if available).
• Poor Sound Quality:
  Ensure there are no obstructions between the earphones and your device. Move closer to your device to reduce interference. Check if the ear tips are properly sealed in your ear canal.

8. User Tips

• For optimal sound quality and comfort, try different ear tip sizes if provided, to find the best fit for your ears.
• Keep your device within the 10-meter transmission range for stable connection.
• Regularly clean the charging contacts to prevent charging issues.

9. Warranty and Support

For warranty information, technical support, or service inquiries, please contact the seller or retailer from whom you purchased the Kaidi KD-772 Wireless Earphones. Please retain your proof of purchase for any warranty claims.