hisonic STN-27
Hisonic Unicorn Bluetooth Headphones
Model: STN-27
Introduction
Thank you for choosing the Hisonic Unicorn Bluetooth Headphones. These wireless over-ear headphones are designed specifically for children, featuring a comfortable fit, built-in microphone, and colorful flashing lights. This manual provides detailed instructions for setup, operation, maintenance, and troubleshooting to ensure optimal performance and a safe user experience.
What's in the Box
- 1 x Hisonic Unicorn Bluetooth Headphones
- 1 x Audio Cable (3.5mm jack)
- 1 x USB Charging Cable
- 1 x User Manual

Image: The Hisonic Unicorn Bluetooth Headphones displayed next to their retail box, illustrating the product and its packaging.
Product Features
- Unicorn Design with Flashing Lights: Features unique unicorn ears and horn with colorful, blinking LED lights, making them appealing for children.
- Bluetooth 5.0 Connectivity: Ensures a fast, stable, and reliable wireless connection for seamless audio streaming.
- Built-in Microphone: Allows for hands-free calls and facilitates online learning or communication.
- Comfortable Over-Ear Design: Equipped with soft over-ear cushions and an adjustable headband for a comfortable fit for children aged 3-16.
- Foldable Design: Easily foldable for convenient storage and portability.
- Wired and Wireless Modes: Can be used wirelessly via Bluetooth or wired using the included 3.5mm audio cable.

Image: Close-up of the soft over-ear pads and adjustable headband, highlighting the comfortable design.

Image: Diagram showing the headphones connecting wirelessly via Bluetooth 5.0 to a smartphone, indicating a 10-meter connection distance.
Setup Guide
1. Charging the Headphones
- Connect the included USB charging cable to the charging port on the headphones.
- Plug the other end of the USB cable into a standard USB power adapter (not included) or a computer's USB port.
- The LED indicator light will show the charging status. It typically turns off or changes color when fully charged.
- Allow approximately 2-3 hours for a full charge.
2. Bluetooth Pairing
- Ensure the headphones are fully charged.
- Press and hold the Power button (usually the multi-function button) on the headphones until the LED indicator flashes blue and red, indicating pairing mode.
- On your device (smartphone, tablet, computer), go to the Bluetooth settings.
- Search for available devices and select "STN-27" or "Hisonic Unicorn" from the list.
- Once connected, the LED indicator will typically show a solid blue light or flash slowly.
3. Wired Connection (Optional)
- Insert one end of the included 3.5mm audio cable into the audio jack on the headphones.
- Plug the other end into the 3.5mm audio output of your device.
- The headphones will function as wired headphones, and Bluetooth will be automatically disabled.
Operating Instructions
Button Functions

Image: A detailed diagram illustrating the location and function of each button on the Hisonic Unicorn Headphones.
| Button/Action | Function |
|---|---|
| Power Button (Multi-function) |
|
| Volume Up / Next Track Button |
|
| Volume Down / Previous Track Button |
|
| LED Light Control |
|
Making and Receiving Calls
- Answering a Call: When a call comes in, short press the Power button to answer.
- Ending a Call: During a call, short press the Power button to end the call.
- Rejecting a Call: Long press the Power button to reject an incoming call.
Maintenance
- Cleaning: Use a soft, dry cloth to clean the headphones. Do not use abrasive cleaners or solvents.
- Storage: When not in use, store the headphones in a cool, dry place, away from direct sunlight and extreme temperatures. The foldable design allows for compact storage.
- Battery Care: To prolong battery life, charge the headphones regularly, even if not used frequently. Avoid fully discharging the battery for extended periods.
- Water Resistance: These headphones are not waterproof. Avoid exposure to water or excessive moisture.
Troubleshooting
| Problem | Possible Solution |
|---|---|
| Headphones won't turn on. | Ensure the headphones are fully charged. Connect to a power source and try again. |
| Cannot pair with Bluetooth device. |
|
| No sound or low volume. |
|
| LED lights are not working. | Double click the Power button to toggle the LED lights on/off. Ensure headphones have sufficient battery. |
Specifications
| Feature | Detail |
|---|---|
| Model Number | STN-27 |
| Connectivity Technology | Bluetooth 5.0, Wired (3.5mm Jack) |
| Headphone Type | Over-Ear |
| Form Factor | Circumaural (Ohrumschließend) |
| Impedance | 32 Ohm |
| Sensitivity | 94 dB |
| Noise Control | Noise Shielding (Geräuschabschirmung) |
| Battery | 1 Lithium-Ion battery (included) |
| Product Dimensions | 16.5 x 7 x 18 cm |
| Weight | 206 Grams |
| Manufacturer | Shenzhen Hisonic Audio Products Co., Ltd. |
| Country of Origin | China |
Warranty and Support
Hisonic provides a 12-month warranty from the date of purchase for these headphones. This warranty covers manufacturing defects and issues arising from normal use.
For warranty claims, technical support, or any questions regarding your Hisonic Unicorn Bluetooth Headphones, please contact Hisonic customer service through the retailer where you purchased the product or visit the official Hisonic website for contact information.
Please retain your proof of purchase for warranty validation.
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