1. Overview
The OTL Technologies SH0985 Sonic The Hedgehog Wireless Headphones are designed for children aged 3 and above. These headphones offer both wireless (Bluetooth) and wired (3.5mm audio cable) connectivity, featuring an integrated microphone for communication. To ensure hearing safety, the headphones include two sound-safe volume settings: a standard 85 dB limit and a higher 95 dB setting for environments with increased background noise, such as during travel. They are compatible with a wide range of devices including tablets, smartphones, handheld gaming consoles, and learning devices.

Image: Front view of the OTL Technologies SH0985 Sonic The Hedgehog Wireless Headphones, showcasing the blue and white design with Sonic character on the earcups.
2. Features
- Dual Volume Settings: Features two sound-safe volume limits at 85 dB and 95 dB, allowing selection for optimal listening in various environments while protecting sensitive hearing.
- Extended Playtime: Equipped with a built-in 500 mAh battery, providing up to 24 hours of continuous playtime on a single charge.
- Fast Charging: Fully charges in approximately 2 hours using the included Type-C USB charging cable.
- Wireless Range: Offers a wireless operating distance of up to 10 meters (33 feet) via Bluetooth 5.0.
- Adjustable Fit: Suitable for children aged 3 and above, with an extendable adjuster for a customized and flexible fit for various head shapes.
- Integrated Microphone: Allows for hands-free calls and voice chat during gaming or online learning.
- Wired Mode Option: Can be used in wired mode with the included 3.5mm universal jack cable, also supporting audio sharing.

Image: Close-up view of the adjustable headband, showing numbered size indicators for a custom fit.
3. Package Contents
Please check the package for the following items:
- OTL Technologies SH0985 Sonic The Hedgehog Wireless Headphones
- Type-C USB Charging Cable
- 3.5mm Universal Audio Sharing Cable
- Instruction Manual (this document)

Image: The product packaging, showing the headphones and indicating included cables and instruction leaflet.

Image: Close-up of the blue 3.5mm audio sharing cable.
4. Setup
4.1 Initial Charge
Before first use, fully charge the headphones. Connect the Type-C USB charging cable to the charging port on the headphones and the other end to a USB power source (e.g., computer, wall adapter). The LED indicator will show charging status and turn off or change color when fully charged.
4.2 Adjusting the Fit
Adjust the headband by gently sliding the earcups up or down until they fit comfortably over the ears. Ensure the earcups fully cover the ears for optimal sound and comfort.
5. Operating Instructions
5.1 Power On/Off
- To Power On: Press and hold the Power button (usually marked with a power symbol) for approximately 3 seconds until the LED indicator lights up.
- To Power Off: Press and hold the Power button for approximately 3 seconds until the LED indicator turns off.

Image: Side view of the right earcup, highlighting the power button and volume controls.
5.2 Bluetooth Pairing
- Ensure the headphones are powered off.
- Press and hold the Power button for about 5-7 seconds until the LED indicator flashes blue and red alternately, indicating pairing mode.
- On your device (smartphone, tablet, etc.), go to Bluetooth settings and enable Bluetooth.
- Search for available devices and select "OTL SH0985" (or similar name) from the list.
- Once paired, the LED indicator on the headphones will flash blue slowly or remain solid blue.
5.3 Volume Control
- Adjusting Playback Volume: Use the volume buttons (+/-) on the headphones or your connected device to adjust the listening volume.
- Switching Volume Limit: The headphones feature a switch to select between 85 dB and 95 dB volume limits. Locate the switch on one of the earcups and slide it to your desired setting.

Image: Close-up of the earcup showing the switch for 85dB and 95dB volume limits.
5.4 Wired Mode (Audio Sharing)
To use the headphones in wired mode or for audio sharing:
- Connect one end of the 3.5mm audio sharing cable to the audio input jack on the headphones.
- Connect the other end to the audio output jack of your device (e.g., tablet, smartphone).
- For audio sharing, connect a second pair of headphones to the other 3.5mm jack on the cable.
- The headphones do not require power when used in wired mode.
5.5 Answering Calls
When connected via Bluetooth, you can answer incoming calls using the integrated microphone:
- To Answer/End Call: Press the Multi-function button (often the same as the Power button, or a dedicated call button) once.
- To Reject Call: Press and hold the Multi-function button for approximately 2 seconds.
6. Charging the Headphones
To charge the headphones:
- Locate the Type-C USB charging port on the headphones.
- Connect the Type-C end of the charging cable to the headphones.
- Connect the standard USB end of the cable to a compatible USB power source (e.g., computer USB port, USB wall adapter, power bank).
- The LED indicator will illuminate during charging. Refer to the LED indicator section in the full manual for specific light patterns.
- A full charge typically takes about 2 hours.
Note: Do not use damaged charging cables or chargers. Always ensure the charging port is dry before connecting the cable.
7. 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 headphones are foldable for compact storage.
- Water Exposure: These headphones are not water-resistant. Avoid exposure to water or excessive moisture.
- Cable Care: Handle cables gently. Avoid sharp bends or excessive pulling to prevent damage.

Image: Top-down view of the headphones, illustrating their design and foldable nature for storage.
8. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Headphones do not power on. | Low battery. | Charge the headphones fully. |
| Cannot pair via Bluetooth. | Headphones not in pairing mode; device Bluetooth off; too far from device. | Ensure headphones are in pairing mode (flashing blue/red). Turn on Bluetooth on your device. Move headphones closer to the device (within 10 meters). |
| No sound in wireless mode. | Volume too low; not properly paired; device output issue. | Increase volume on headphones and device. Re-pair headphones. Check audio output settings on your device. |
| No sound in wired mode. | Cable not fully inserted; damaged cable; device output issue. | Ensure 3.5mm cable is fully inserted into both headphones and device. Try a different 3.5mm cable. Check device audio output. |
| Poor sound quality. | Weak Bluetooth signal; low battery; audio source quality. | Move closer to the Bluetooth device. Charge the headphones. Try a different audio source. |
9. Specifications
| Feature | Detail |
|---|---|
| Model Name | Wireless Headphones |
| Model Number | SH0985 |
| Brand | OTL Technologies |
| Color | Blue |
| Headphone Type | Over-ear |
| Connectivity Technology | Wireless (Bluetooth), Wired (3.5mm jack) |
| Bluetooth Version | 5.0 |
| Bluetooth Range | Up to 10 meters |
| Battery Capacity | 500 mAh (Built-in) |
| Battery Life | Up to 24 hours |
| Charging Time | Approximately 2 hours |
| Volume Limit Levels | 85 dB, 95 dB |
| Impedance | 32 Ohm |
| Frequency Response | 20 Hz - 20,000 Hz |
| Sensitivity | 85 dB |
| Microphone | Integrated |
| Material | Plastic |
| Item Weight | 160 Grams |
| Recommended Age | 3+ years |
| Water Resistance Level | Not water-resistant |
10. Safety Information
- Hearing Protection: Always use the headphones at a safe volume. Prolonged exposure to loud sounds can cause permanent hearing damage. The built-in volume limits (85 dB and 95 dB) are designed to protect children's hearing.
- Choking Hazard: This product contains small parts and is not suitable for children under 3 years old due to potential choking hazards.
- Supervision: Children should be supervised while using the headphones, especially when adjusting volume or connecting cables.
- Environmental Awareness: Do not use headphones in situations where the inability to hear ambient sounds could be dangerous, such as while walking near traffic or operating machinery.
- Heat and Moisture: Keep the headphones away from heat sources, direct sunlight, and moisture. Do not immerse in water.
- Disposal: Do not dispose of the product with household waste. Follow local regulations for proper disposal of electronic devices.
11. Warranty and Support
Warranty: This product comes with a 1-year warranty from the date of purchase, covering manufacturing defects. Please retain your proof of purchase for warranty claims.
Customer Support: For technical support, troubleshooting assistance, or warranty inquiries, please contact OTL Technologies customer service. Refer to the official OTL Technologies website for contact details.