1. Introduction
Thank you for choosing the Kaidi KD913 Wireless Stereo Headphone. This manual provides essential information for setting up, operating, and maintaining your new headphones. Please read it carefully before use to ensure optimal performance and longevity of the product.
2. Safety Information
- Volume Control: Avoid listening at high volume levels for extended periods to prevent hearing damage.
- Water Exposure: Do not expose the headphones to water or moisture. This product is not waterproof.
- Heat Exposure: Keep the headphones away from extreme temperatures, direct sunlight, and heat sources.
- Cleaning: Use a soft, dry cloth for cleaning. Do not use abrasive cleaners or solvents.
- Disassembly: Do not attempt to disassemble or modify the headphones. This will void the warranty.
3. Package Contents
Please check the package for the following items:
- Kaidi KD913 Wireless Stereo Headphone
- USB Charging Cable
- User Manual
4. Product Overview
Familiarize yourself with the components of your Kaidi KD913 headphones.
Image: Kaidi KD913 Headphone in a folded position, showcasing its compact design.
Image: Close-up view of a Kaidi KD913 Headphone earcup, highlighting the cushioning and 'KAIDI' branding.
Headphone Components:
- Power/Multi-function Button: Used for power on/off, play/pause, answer/end calls.
- Volume Up/Next Track Button: Increases volume, skips to the next track.
- Volume Down/Previous Track Button: Decreases volume, goes to the previous track.
- LED Indicator: Shows power, charging, and pairing status.
- Microphone: For hands-free calls.
- USB Charging Port: For connecting the charging cable.
- AUX-in Port: For wired audio connection.
5. Setup
5.1. Charging the Headphone
- Connect the small end of the USB charging cable to the USB charging port on the headphone.
- Connect the larger end of the USB charging cable to a USB power adapter (not included) or a computer's USB port.
- The LED indicator will illuminate (typically red) during charging.
- Once fully charged, the LED indicator will change color (typically blue) or turn off. Disconnect the charging cable.
Note: For first-time use, fully charge the headphones before use.
5.2. Pairing with Devices (Bluetooth)
- Power On: Press and hold the Power/Multi-function button for approximately 3-5 seconds until the LED indicator flashes blue and red alternately. This indicates the headphones are in pairing mode.
- Activate Bluetooth: On your device (smartphone, tablet, laptop), enable Bluetooth.
- Search for Devices: In your device's Bluetooth settings, search for available devices.
- Select 'KD913': From the list of found devices, select 'KD913'.
- Confirm Pairing: Once successfully paired, the LED indicator on the headphones will flash blue slowly, and you will hear an audible confirmation.
Note: If a password is required, enter '0000'. The headphones will automatically connect to the last paired device when powered on, if Bluetooth is enabled on the device.
6. Operating Instructions
6.1. Power On/Off
- Power On: Press and hold the Power/Multi-function button for 3 seconds. The LED indicator will flash blue.
- Power Off: Press and hold the Power/Multi-function button for 3 seconds. The LED indicator will turn off.
6.2. Music Playback Controls
- Play/Pause: Press the Power/Multi-function button once.
- Next Track: Press and hold the Volume Up button.
- Previous Track: Press and hold the Volume Down button.
6.3. Call Management
- Answer Call: Press the Power/Multi-function button once.
- End Call: Press the Power/Multi-function button once during a call.
- Reject Call: Press and hold the Power/Multi-function button for 2 seconds.
- Redial Last Number: Double-press the Power/Multi-function button.
6.4. Volume Control
- Increase Volume: Short press the Volume Up button.
- Decrease Volume: Short press the Volume Down button.
6.5. Wired Mode (AUX-in)
To use the headphones in wired mode, connect a 3.5mm audio cable (not included) from your audio source to the AUX-in port on the headphones. The Bluetooth function will automatically disable when an AUX cable is connected.
7. Maintenance
7.1. Cleaning
Wipe the headphones with a soft, dry, lint-free cloth. Do not use liquid cleaners, sprays, or harsh chemicals.
7.2. Storage
When not in use, store the headphones in a cool, dry place, away from direct sunlight and extreme temperatures. If storing for an extended period, ensure the headphones are partially charged to maintain battery health.
8. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Headphones do not power on. | Low battery. | Charge the headphones fully. |
| Cannot pair with device. | Headphones not in pairing mode; Bluetooth not enabled on device; device too far. | Ensure headphones are in pairing mode (flashing red/blue). Enable Bluetooth on your device. Move device closer to headphones. |
| No sound. | Volume too low; headphones not connected; incorrect audio output selected. | Increase volume on headphones and device. Re-pair headphones. Check audio output settings on your device. |
| Poor sound quality. | Interference; device too far; low battery. | Move closer to the paired device. Avoid strong electromagnetic interference. Charge the headphones. |
9. Specifications
- Brand: Kaidi
- Model: KD913
- Connectivity Technology: Wireless
- Wireless Communication Technology: Bluetooth
- Headphone Form Factor: Over-ear (Circumaurais)
- Ear Placement: Over-ear (Circumaurais)
- Color: Black
- Compatible Devices: Cell phones, Notebooks, Tablets, Televisions
- Cable Features: Wireless (No cable)
10. Warranty and Support
Kaidi products are designed for reliability and performance. For warranty information or technical support, please refer to the warranty card included with your purchase or contact your local retailer or Kaidi customer service.
