YUSONIC STN-27

YUSONIC Unicorn Kids Headphones Instruction Manual

Model: STN-27

Brand: YUSONIC

1. Introduction

Thank you for choosing the YUSONIC Unicorn Kids Headphones. These wireless headphones are designed specifically for children, featuring a unique unicorn design with flashing LED lights, comfortable over-ear soft pads, and a built-in microphone for clear communication. They offer a safe listening experience with a 93dB volume limit and stable Bluetooth 5.0 connectivity. This manual provides essential information for setup, operation, maintenance, and troubleshooting to ensure optimal performance and enjoyment of your headphones.

YUSONIC Unicorn Kids Headphones, white and pink with light-up unicorn horn and ears

Image: YUSONIC Unicorn Kids Headphones in white and pink, showcasing the light-up unicorn horn and ears, along with the product packaging.

2. Package Contents

  • YUSONIC Unicorn Kids Headphones (Model: STN-27)
  • Charging Cable
  • Audio Cable (3.5mm Jack, Detachable)
  • User Manual

3. Setup

3.1 Charging the Headphones

Before first use, fully charge the headphones.

  1. Locate the charging port on the headphone earcup.
  2. Connect the provided charging cable to the headphone's charging port and the other end to a USB power source (e.g., computer, wall adapter).
  3. The indicator light will show charging status (refer to the headphone's specific light indicators for full charge).
  4. A full charge takes approximately 1.5 hours and provides up to 15 hours of battery life.
Close-up of the headphone earcup showing the charging port and 3.5mm audio jack

Image: Close-up view of the headphone earcup, highlighting the charging port and 3.5mm audio jack for wired connection.

3.2 Bluetooth Pairing

Pair your headphones with a Bluetooth-enabled device (e.g., smartphone, tablet, laptop).

  1. Ensure the headphones are charged and powered off.
  2. Press and hold the Power button until the indicator light flashes, indicating pairing mode.
  3. On your device, enable Bluetooth and search for available devices.
  4. Select "UNICORN HEADPHONES stn27" from the list.
  5. Once connected, the indicator light will change (e.g., solid blue), and a voice prompt may confirm the connection.
Headphones connected via Bluetooth to a smartphone, illustrating a stable connection

Image: The headphones are shown wirelessly connected to a smartphone, demonstrating the Bluetooth 5.0 capability and a stable connection distance of 33 feet.

4. Operating Instructions

4.1 Power On/Off

  • To Power On: Press and hold the Power button until the indicator light illuminates.
  • To Power Off: Press and hold the Power button until the indicator light turns off.

4.2 Volume Control and Track Navigation

The headphones feature button controls on the earcup.

  • Volume Up: Press the "+" button.
  • Volume Down: Press the "-" button.
  • Next Track: Long press the "+" button.
  • Previous Track: Long press the "-" button.
  • Play/Pause: Press the Multi-function button (often the power button or a dedicated play/pause button).
Side view of the headphone earcup showing control buttons

Image: A detailed side view of the headphone earcup, highlighting the control buttons for volume, track navigation, and power.

4.3 Flashing LED Lights

The unicorn ears and horn feature flashing LED lights that change color with the rhythm.

  • To turn lights ON: Press the "+" button two times quickly.
  • To turn lights OFF: Press the "+" button two times quickly again.

4.4 Wired Mode (Optional)

The headphones can be used in wired mode with the provided 3.5mm audio cable, even if the battery is depleted.

  • Connect one end of the 3.5mm audio cable to the headphone's audio jack.
  • Connect the other end to the audio output jack of your device.

5. Maintenance

  • Clean the headphones regularly with a soft, dry cloth.
  • Avoid exposing the headphones to extreme temperatures, humidity, or direct sunlight.
  • Store the headphones in a cool, dry place when not in use. The foldable design allows for compact storage.
  • While the headphones are rated as "Waterproof", avoid submerging them in water or exposing them to heavy rain to prolong their lifespan.
  • Do not attempt to disassemble or repair the headphones yourself, as this will void the warranty.
Folded YUSONIC Unicorn Kids Headphones for compact storage

Image: The headphones are shown in their folded configuration, demonstrating the compact design for easy storage and portability.

6. Troubleshooting

ProblemPossible CauseSolution
Headphones do not power on.Low battery.Charge the headphones fully.
Cannot pair with device.Bluetooth is off on device; headphones not in pairing mode; too far from device.Ensure Bluetooth is enabled on your device. Put headphones in pairing mode. Move headphones closer to the device (within 33 feet).
No sound or low volume.Volume too low on headphones or device; headphones not connected; incorrect audio source.Increase volume on both headphones and device. Re-pair headphones. Check if the correct audio output is selected on your device.
LED lights not flashing.Lights are turned off.Press the "+" button two times quickly to activate the lights.

7. Specifications

FeatureDetail
Model NameUNICORN HEADPHONES stn27
Connectivity TechnologyWireless (Bluetooth)
Wireless Communication TechnologyBluetooth 5.0
Bluetooth Range10 Meters (33 feet)
Earpiece ShapeOver Ear
Audio Driver Size40 Millimeters
Sensitivity94 dB (Volume Limited)
Frequency Response20 Hz - 20 kHz
Battery Life15 Hours
Charging Time1.5 Hours
Headphones Jack3.5 mm Jack (Detachable Cable)
MaterialAcrylonitrile Butadiene Styrene (ABS)
Item Weight250 Grams (8.8 ounces)
Product Dimensions6.69 x 3.15 x 9.45 inches
Water Resistance LevelWaterproof

8. Warranty and Support

For warranty information or technical support, please contact YUSONIC directly. You can often find support contact details on the manufacturer's official website or through the retailer where the product was purchased.

Visit the official YUSONIC Store for more information: YUSONIC Amazon Store

© 2025 YUSONIC. All rights reserved.

Ask a question about this manual

Ask about setup, troubleshooting, compatibility, parts, safety, or missing instructions. Manuals+ will review the question and use this page’s manual context to help answer it.

After a successful submission, we securely hash the supplied account or form email before sending it to Microsoft Advertising for conversion attribution. Privacy details.