Docooler VLK6678766927921ED
Docooler VLK6678766927921ED Digital Sports MP3 Player Headset User Manual
Model: VLK6678766927921ED
Introduction
This manual provides detailed instructions for the proper use and maintenance of your Docooler Digital Sports MP3 Player Headset. This wireless, head-wearing music player is designed for active use, featuring MP3/WMA/WAV playback and an integrated FM radio function. Please read this manual thoroughly before operating the device.
What's in the Box
- Docooler Digital Sports MP3 Player Headset
- USB Charging Cable

Image: The Docooler Digital Sports MP3 Player Headset shown alongside its included USB charging cable.
Product Overview
Familiarize yourself with the components and controls of your MP3 player headset.

Image: Detailed views of the headset, highlighting the earbud design, control buttons (such as power, volume, and track skip), and the Micro USB charging port and TF card slot.
- Power/Play/Pause Button: Used to turn the device on/off and control music playback.
- Volume Up/Next Track Button: Increases volume with a short press, skips to the next track with a long press.
- Volume Down/Previous Track Button: Decreases volume with a short press, skips to the previous track with a long press.
- Mode Button: Switches between MP3 player mode and FM radio mode.
- Micro USB Port: For charging the device.
- TF Card Slot: For inserting a Micro SD card (up to 8GB) containing music files.
Setup
1. Charging the Device
Before first use, fully charge the MP3 player headset. Use the provided USB cable to connect the device's Micro USB port to a computer's USB port or a compatible USB wall adapter.
- A red indicator light will typically illuminate during charging.
- The indicator light will change or turn off once charging is complete (approximately 2-3 hours for a full charge).
2. Inserting a TF Card
The device requires a TF (Micro SD) card to store and play music. It supports cards up to 8GB.
- Locate the TF card slot on the side of the headset.
- Gently insert the TF card into the slot with the gold contacts facing down until it clicks into place.
- To remove, push the card in slightly until it springs out.

Image: The headset displaying its TF card slot, with an 8GB Micro SD card positioned for insertion. The image also indicates support for MP3, WMA, and WAV audio formats.
3. Loading Music Files
Connect the headset to your computer using the USB cable. The device will appear as a removable disk. Drag and drop your MP3, WMA, or WAV audio files directly onto the TF card.
Operating Instructions
Power On/Off
- To Power On: Press and hold the Power/Play/Pause button for a few seconds until the indicator light turns on.
- To Power Off: Press and hold the Power/Play/Pause button for a few seconds until the indicator light turns off.
Music Playback (MP3 Mode)
- After powering on, the device will automatically enter MP3 playback mode if a TF card with music is inserted.
- Play/Pause: Press the Power/Play/Pause button once to play or pause music.
- Next Track: Long press the Volume Up button.
- Previous Track: Long press the Volume Down button.
- Volume Adjustment: Short press the Volume Up or Volume Down buttons to adjust the volume level.
FM Radio Function
- Switch to FM Mode: Press the Mode button to switch from MP3 mode to FM radio mode.
- Automatic Station Scan: In FM mode, long press the Play/Pause button to initiate an automatic scan for available radio stations. The device will save found stations.
- Change Station: Short press the Volume Up or Volume Down buttons to cycle through saved FM stations.
- Volume Adjustment: Short press the Volume Up or Volume Down buttons to adjust the volume level.
- Switch to MP3 Mode: Press the Mode button again to return to MP3 playback.
Maintenance
- Keep the device dry. Do not expose it to moisture or liquids.
- Clean the device with a soft, dry cloth. Do not use harsh chemicals or abrasive cleaners.
- Avoid extreme temperatures. Store the device in a cool, dry place.
- Do not attempt to disassemble or repair the device yourself. This will void the warranty.
- Protect the USB port and TF card slot from dust and debris.
Troubleshooting
| Problem | Solution |
|---|---|
| Device does not power on. | Ensure the device is fully charged. Connect it to a power source and allow it to charge for at least 30 minutes before attempting to power on again. |
| No music playback. |
|
| FM radio not working or poor reception. |
|
| Device not recognized by computer. |
|
Specifications
| Feature | Detail |
|---|---|
| Audio Formats | MP3 / WMA / WAV |
| Interface | 1 x Micro USB, 1 x TF card slot |
| TF Card Support | Up to 8 GB |
| S/N Ratio | ≥86 DB |
| Output Frequency | 20-20 KHz |
| Battery | Li-po battery |
| USB | USB 2.0 |
| Operating System | Windows 98 / 2000 / XP (for file transfer) |
| Play Time | Up to 6 hours |
| Working Temperature | -10~45 degrees Celsius |
| Model Number | VLK6678766927921ED |
| Brand | Docooler |
Warranty and Support
For warranty information or technical support, please refer to the documentation provided at the time of purchase or contact your retailer. Keep your purchase receipt as proof of purchase.
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