1. Introduction
The Sony IER-EX15C USB-C Wired In-Ear Headphones are designed for clear audio and convenient control across various devices. These headphones offer a straightforward plug-and-play experience without the need for charging or complex setup. They feature powerful bass, crisp vocals, and an in-line remote with a multi-function button, volume controls, and a built-in microphone.

Image: Sony IER-EX15C USB-C Wired In-Ear Headphones in black, showcasing the earbuds and USB-C connector.
Key Features:
- USB-C Connectivity: Connects easily via USB-C across a wide range of devices, supporting USB Audio Class 1.0.
- High-Quality Sound: Delivers powerful bass and crystal-clear vocals for an immersive audio experience.
- In-Line Remote Control: Features a multi-function button, volume +/- controls, and a built-in microphone for hands-free calls and audio management.
- Comfortable Fit: Designed with secure-fitting silicone earbuds and includes different size ear tips for personalized comfort.
- Tangle-Resistant Cable: Serrated cable design helps reduce tangles for easier carrying and storage.
- Compact and Portable: Lightweight design makes them ideal for music, calls, and travel.
2. What's in the Box
Upon opening your product packaging, you should find the following items:
- Sony IER-EX15C USB-C Wired In-Ear Headphones
- Multiple sizes of silicone ear tips (XS, S, M, L)
3. Setup and Connection
These headphones are designed for simple plug-and-play functionality. No charging or complex pairing is required.
Connecting to Your Device:
- Locate the USB-C port on your smartphone, tablet, laptop, or other compatible audio device.
- Insert the USB-C connector of the headphones firmly into the device's USB-C port.
- The headphones should be automatically recognized by your device. You may need to select them as the audio output device in your device's sound settings.
Note: Compatibility with USB Audio Class 1.0 devices. Depending on the connected device, operating system, or application software, the function may not work properly or the operation may differ. In that case, please operate the connected device.

Image: Ready to connect, anytime. Sony USB-C headphones plugged into various devices like a phone, PC, tablet, and game console.
4. Operating Instructions
The in-line remote control provides convenient access to audio playback and call management functions.

Image: Intuitive operation. Close-up of the in-line remote control showing playback, pause, volume, and mute functions.
In-Line Remote Functions:
- Multi-Function Button:
- Press once to Play/Pause music.
- Press once to Answer/End a call.
- Press twice to skip to the next track.
- Press three times to go to the previous track.
- Volume Up (+): Press to increase the volume.
- Volume Down (-): Press to decrease the volume.
- Microphone: The built-in microphone allows for hands-free communication during calls.
Sound Quality:
The IER-EX15C headphones are engineered to deliver a balanced audio experience with powerful bass and clear vocal reproduction, ensuring an enjoyable listening experience for various audio content.

Image: Rich bass. Clear vocals. Visual representation of the headphones' sound quality.
5. Comfort and Fit
Achieving a comfortable and secure fit is essential for optimal sound quality and listening experience. The IER-EX15C headphones come with various ear tip sizes to suit different ear canals.

Image: Comfortable fit. An earbud properly seated in an ear, highlighting its ergonomic design.
Selecting the Right Ear Tips:
- Experiment with the different ear tip sizes provided (XS, S, M, L).
- Choose the size that creates a snug seal in your ear canal. A good seal enhances bass response and helps block out external noise.
- The ear tips should feel comfortable for extended periods of wear without causing pressure or discomfort.
6. Care and Maintenance
Proper care will extend the life of your headphones and maintain optimal performance.
General Care:
- Cleaning: Gently wipe the earbuds and cable with a soft, dry cloth. Do not use harsh chemicals or abrasive materials.
- Storage: When not in use, store the headphones in a clean, dry place. Avoid extreme temperatures.
- Cable Management: The serrated cable design helps prevent tangles. Use the included cable slider to adjust cable length and keep it neat.

Image: Less tangling, less hassle. The serrated cable helps reduce tangles for easier carrying.

Image: Keep it in place with cable slider. A close-up view of the cable slider for managing cable length.
7. Troubleshooting
If you encounter issues with your headphones, try the following solutions:
| Problem | Solution |
|---|---|
| No sound or low volume. |
|
| Microphone not working. |
|
| Earbuds fall out easily. |
|
| Sound quality is poor. |
|
8. Specifications
| Feature | Detail |
|---|---|
| Brand | Sony |
| Model Name | IER-EX15C |
| Connectivity Technology | Wired (USB-C) |
| Ear Placement | In Ear |
| Form Factor | In Ear |
| Color | Black (other colors available for different variants) |
| Noise Control | None |
| Control Method | Remote (In-line multi-function button, volume +/-) |
| Audio Driver Type | Dynamic Driver |
| Frequency Range | 20 Hz - 20,000 Hz |
| Item Weight | 0.05 Kilograms |
| Compatible Devices | Laptops, Tablets, Telephones (Supports USB Audio Class 1.0 Devices) |
| Material | Silicone (ear tips) |
9. Warranty and Support
Your Sony IER-EX15C headphones come with a 1-year warranty from the date of purchase. For warranty claims, technical support, or further assistance, please refer to the official Sony support website or contact their customer service.
For additional information and support, visit the official Sony Store: Sony Store on Amazon
10. Product Overview Video
Video: Official Sony product overview for the IER-EX15C USB-C Wired In-Ear Headphones. This video highlights key features such as plug-and-play connectivity, comfortable fit, compact design, high-quality sound, intuitive controls, and available color options.





