1. Introduction
Thank you for choosing the KAIDI KD-771 TWS Smart Touch V5.1 Wireless Earbuds. This manual provides essential information for the proper use, setup, and maintenance of your new earbuds. Please read it carefully before use and retain it for future reference.
Package Contents:
- 1 Pair of KAIDI KD-771 Wireless Earbuds
- 1 Charging Case
- 1 USB Charging Cable (Type-C)
- 1 User Manual
Image 1.1: KAIDI KD-771 Wireless Earbuds with their retail packaging.
2. Safety Information
- Do not disassemble, repair, or modify the product. This may cause fire, electronic breakdown, or complete product damage.
- Keep the device away from extreme temperatures, direct sunlight, and high humidity.
- Avoid exposing the earbuds to water or other liquids. While rated IPX4 for splash resistance, they are not waterproof and should not be submerged.
- Use only the provided charging cable or a certified equivalent.
- Do not use the earbuds at excessively high volumes for extended periods to prevent hearing damage.
- Keep out of reach of children.
3. Product Overview
The KAIDI KD-771 earbuds feature a compact design with intuitive touch controls and a portable charging case.
Image 3.1: The KAIDI KD-771 Wireless Earbuds alongside their closed charging case.
Image 3.2: Detailed view of the earbuds and charging case, highlighting the USB Type-C charging port and earbud design.
Components:
- Earbuds: Left and Right earbuds with Smart Touch sensors.
- Charging Case: Stores and charges the earbuds. Features a battery indicator LED and a USB Type-C charging port.
- Microphone: Integrated into each earbud for calls.
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.
- Connect the USB 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).
- The LED indicator on the charging case will illuminate to show charging status. Once fully charged, the indicator may change color or turn off.
- A full charge provides approximately 4 hours of earbud usage, with additional charges available from the case.
Image 4.1: Earbuds placed inside the charging case, ready for charging.
4.2 Pairing with a Device
The earbuds use Bluetooth V5.1 for a stable and low-latency connection.
- Power On: Open the charging case. The earbuds will automatically power on and enter pairing mode. You may hear an audible prompt.
- Activate Bluetooth: On your smartphone or other Bluetooth-enabled device, go to the Bluetooth settings and ensure Bluetooth is enabled.
- Select Device: In the list of available Bluetooth devices, locate and select "KD-771".
- Confirm Connection: Once connected, you will hear a confirmation sound, and the earbuds will be ready for use.
- Automatic Reconnection: After initial pairing, the earbuds will automatically connect to the last paired device when removed from the case, provided Bluetooth is active on the device.
5. Operating Instructions
The KAIDI KD-771 earbuds feature Smart Touch controls for easy management of audio and calls.
5.1 Smart Touch Controls
- Play/Pause: Single tap on either earbud.
- Next Track: Double tap on the right earbud.
- Previous Track: Double tap on the left earbud.
- Answer/End Call: Single tap on either earbud during an incoming call or active call.
- Reject Call: Press and hold either earbud for 2 seconds during an incoming call.
- Activate Voice Assistant: Triple tap on either earbud (e.g., Siri, Google Assistant).
- Volume Control: Volume adjustments must be made directly on the connected device (smartphone, tablet, etc.). The earbuds do not have integrated volume controls.
5.2 Power On/Off
- Power On: Open the charging case, or press and hold the touch area on both earbuds for 3 seconds if they are outside the case and off.
- Power Off: Place the earbuds back into the charging case and close the lid. Alternatively, press and hold the touch area on both earbuds for 5 seconds.
6. Maintenance
6.1 Cleaning
- Wipe the earbuds and charging case with a soft, dry, lint-free cloth.
- Do not use abrasive cleaners, alcohol, or chemical solvents.
- Ensure charging contacts on both earbuds and case are clean and free of debris.
6.2 Storage
- When not in use, store the earbuds in their charging case to protect them and keep them charged.
- Store in a cool, dry place, away from direct sunlight and extreme temperatures.
6.3 Water Resistance
The KAIDI KD-771 earbuds are rated IPX4, meaning they are resistant to splashes of water from any direction. This makes them suitable for workouts or light rain. However, they are not designed for submersion in water, showering, or swimming. Avoid exposing them to heavy rain or direct streams of water.
7. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Earbuds do not power on. | Low battery. | Charge the earbuds and charging case fully. |
| Earbuds do not pair with device. | Bluetooth is off on device; earbuds not in pairing mode; device list cluttered. | Ensure Bluetooth is on. Place earbuds in case, close, then open to re-enter pairing mode. Forget "KD-771" on your device and try pairing again. |
| No sound from earbuds. | Volume too low; earbuds not connected; media paused. | Increase volume on your device. Check Bluetooth connection. Ensure media is playing. |
| One earbud has no sound. | Earbuds not properly synced; low battery on one earbud. | Place both earbuds back in the case, close the lid, then open again. Ensure both earbuds are charged. |
| Charging case not charging. | Faulty cable or power source. | Try a different USB Type-C cable and/or power adapter. Ensure connections are secure. |
8. Specifications
- Model Name: KD-771
- Connectivity Technology: Wireless (Bluetooth V5.1)
- Wireless Communication Technology: Bluetooth
- Control Method: Touch
- Special Features: Volume control (via device), Lightweight, Microphone included, IPX4 Splash Resistant
- Ear Placement: In-Ear
- Material: Plastic
- Frequency Response: 20 Hz - 20 kHz (implied from 20000 Hz spec)
- Sound Responsiveness: 115 Decibels
- Impedance: 32 Ohm
- Frequency Range: 2.400 - 2.485 GHz
- Power Source: Battery
- Average Battery Life (Earbuds): 4 Hours
- Battery Composition: Lithium-ion
- Charging Port: USB Type-C
- Product Weight: 100 g
- ANATEL Certification: 18583-21-14467
9. Warranty and Support
9.1 Manufacturer's Warranty
This product comes with a manufacturer's warranty of 3 months from the date of purchase. This warranty covers manufacturing defects under normal use. It does not cover damage caused by misuse, accidents, unauthorized modifications, or normal wear and tear.
9.2 Customer Support
For technical assistance, warranty claims, or further inquiries, please contact your retailer or the KAIDI customer support channel provided at the point of purchase. Please have your proof of purchase and product model number (KD-771) ready when contacting support.
