Introduction
Thank you for choosing the EarFun K3 Kids Headphones. This manual provides essential information for the safe and effective use of your headphones. Please read it thoroughly before use and retain it for future reference.
Package Contents
Verify that all items listed below are present in your package:
- EarFun K3 Kids Headphones
- User Manual
Product Overview
The EarFun K3 Kids Headphones are designed for children, featuring a volume limit for hearing protection, a built-in microphone, and a comfortable, durable design.

Image: EarFun K3 Kids Headphones, showcasing the violet color and the attached 3.5mm audio cable with inline controls.
Key Features:
- Volume Limit: Selectable 85dBA or 94dBA for hearing protection.
- HD Microphone: Integrated microphone for clear communication.
- Hi-Fi Stereo Sound: 40mm dynamic drivers for immersive audio.
- Comfortable Design: Soft, cushioned ear pads and adjustable headband.
- Durable and Foldable: Twistable metal headband and foldable structure for portability.
Setup
To begin using your EarFun K3 Kids Headphones, follow these simple steps:
- Unfold the Headphones: Gently unfold the headphones until they are in the listening position.
- Adjust the Headband: Extend or retract the headband to fit comfortably over the user's head. The headband is scalable from level 1 to 8.
- Connect the Audio Cable: Insert the 3.5mm audio plug into the audio jack of your device (e.g., tablet, smartphone, computer).

Image: Demonstrates the adjustable headband and foldable earcups of the EarFun K3 headphones, highlighting their flexibility and portability.
Operating Instructions
Volume Limiting Feature (85dBA/94dBA)
The EarFun K3 headphones feature a volume limit switch to protect children's hearing. This switch is located on the inline control of the audio cable.
- 85dBA (Study Mode): Recommended for general listening and extended periods of use, such as during school or quiet activities.
- 94dBA (Travel Mode): Provides a slightly higher volume level, suitable for environments with more background noise, like during travel.
To switch between modes, locate the small switch on the inline control and slide it to the desired setting.

Image: Illustrates two children using the headphones, one in "Study Mode" (85dBA) and another in "Travel Mode" (94dBA), demonstrating the volume limit feature.
Microphone Usage and Inline Controls
The headphones include an HD microphone and inline controls for managing audio playback and calls. These controls are primarily functional with phones and tablets.
- Short Press (MFB Button): Answer/Hang Up calls, Play/Pause audio.
- Double Press (MFB Button): Next Track.
- Triple Press (MFB Button): Previous Track.
- Long Press for 3 Seconds (MFB Button): Activate voice assistant (e.g., Siri).

Image: A detailed diagram showing the inline microphone and multi-function button (MFB) with corresponding actions for short, double, triple, and long presses.
Comfort and Fit
The EarFun K3 headphones are designed for extended comfortable wear:
- Soft Over-Ear Earmuffs: Marshmallow-soft, breathable ear cushions provide comfort and wrap around the ears.
- Adjustable Headband: The headband can be adjusted to accommodate various head sizes, ensuring a secure yet comfortable fit.

Image: A child wearing the EarFun K3 headphones, emphasizing the large, soft over-ear earmuffs for comfort.
Durability and Flexibility
These headphones are built to withstand daily use by children:
- Twistable Metal Headband: Constructed with a durable metal headband that is designed to be three times more resilient than standard plastic headbands.
- Foldable Structure: The earcups can be folded inward, making the headphones compact for easy storage and transport.
- Tangle-free Nylon Cord: The audio cable is made from nylon to resist tangling.

Image: Shows the EarFun K3 headphones being twisted and folded, illustrating their robust and flexible construction.
Maintenance
To ensure the longevity and optimal performance of your EarFun K3 Kids Headphones, follow these maintenance guidelines:
- Cleaning: Use a soft, dry cloth to wipe the headphones. Do not use abrasive cleaners or solvents.
- Storage: When not in use, fold the headphones and store them in a clean, dry place away from direct sunlight and extreme temperatures.
- Cable Care: Avoid sharply bending or pulling the audio cable to prevent damage.
- Water Exposure: These headphones are not water-resistant. Avoid exposure to liquids.
Troubleshooting
If you encounter any issues with your EarFun K3 Kids Headphones, refer to the following common solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| No sound |
|
|
| Microphone not working |
|
|
| Sound is distorted |
|
|
Specifications
| Feature | Detail |
|---|---|
| Model Name | EarFun K3 |
| Connectivity Technology | Wired (3.5mm Plug) |
| Volume Limit | 85dBA / 94dBA (Switchable) |
| Audio Driver Type | Dynamic Driver |
| Audio Driver Size | 40mm |
| Frequency Range | 20 Hz - 20,000 Hz |
| Earpiece Shape | Over Ear |
| Microphone | Built-in HD Microphone |
| Cable Feature | Tangle-free Nylon Cord |
| Item Weight | 207.9 Grams (7.3 ounces) |
| Compatible Devices | Tablets, Smartphones, Computers with 3.5mm jack |
| Water Resistance Level | Not Water Resistant |
Warranty and Support
EarFun provides an 18-month hassle-free protection for this product. For support, inquiries, or warranty claims, please contact EarFun customer service through their official website or the platform where the product was purchased. Please have your purchase details and product model number (K3) ready when contacting support.
Certifications: The EarFun K3 Kids Headphones have passed CPC and FCC certifications, and utilize BPA-free and RoHS compliant materials.


Image: Logos indicating CPC (Children's Product Certificate) and BPA Free certifications, highlighting product safety.





