1. Introduction
Thank you for choosing the coioc S25 Wireless Earbuds. These earbuds are designed to provide a high-quality audio experience with Bluetooth 5.3 connectivity, Environmental Noise Cancellation (ENC) for clear calls, and a comfortable in-ear fit. This manual will guide you through the setup, operation, and maintenance of your new earbuds.
2. Package Contents
Please check the package for the following items:
- coioc S25 Wireless Earbuds (Left and Right)
- Charging Case
- USB-C Charging Cable
- Eartips (various sizes)
- User Manual
3. Product Overview
Familiarize yourself with the components of your coioc S25 Wireless Earbuds and charging case.
Image 1: Diagram illustrating the key features of a single coioc S25 earbud, including the touch control panel, built-in microphone, and the silicone eartip. This helps identify different parts for operation and maintenance.
Image 2: Diagram of the coioc S25 charging case, highlighting the USB-C charging port, LED indicator lights for battery status, and the designated slots for the left and right earbuds. This image aids in understanding how to charge and store the earbuds.
Earbud Components:
- Touch Control Area: For playback, calls, and voice assistant.
- Microphone: For calls and voice commands.
- LED Indicator: Shows pairing status and battery.
- Eartip: Provides comfort and sound isolation.
Charging Case Components:
- Charging Port (USB-C): For charging the case.
- Battery Indicator LEDs: Shows case battery level.
- Earbud Charging Slots: Magnetic slots for charging earbuds.
4. Setup
4.1 Initial Charging
- Before first use, place both earbuds into the charging case.
- Connect the USB-C charging cable to the charging port on the case and plug the other end into a USB power adapter (not included) or a computer's USB port.
- The LED indicators on the charging case will illuminate to show charging status. A full charge typically takes approximately 1.5 hours for the earbuds and 2 hours for the case.
- Once fully charged, disconnect the charging cable.
4.2 Powering On/Off
- Power On: Open the charging case, and the earbuds will automatically power on and enter pairing mode. Alternatively, press and hold the touch control area on both earbuds for 3 seconds.
- Power Off: Place the earbuds back into the charging case and close the lid. They will automatically power off. Alternatively, press and hold the touch control area on both earbuds for 5 seconds.
4.3 Bluetooth Pairing
- Ensure the earbuds are charged and powered on. They will automatically enter pairing mode (LED indicators will flash).
- On your device (smartphone, tablet, laptop), enable Bluetooth.
- Search for available Bluetooth devices and select "coioc S25" from the list.
- Once connected, the earbud LED indicators will stop flashing, and you will hear a confirmation tone.
- If pairing fails, turn off the earbuds, disable Bluetooth on your device, and repeat the steps.
5. Operating Instructions
5.1 Wearing the Earbuds
Choose the eartips that provide the best fit for your ears. Insert the earbuds gently into your ear canal and rotate them slightly until they feel secure and comfortable. A proper fit ensures optimal sound quality and noise isolation.
5.2 Touch Controls
The coioc S25 earbuds feature intuitive touch controls on each earbud:
| Function | Action (Left Earbud) | Action (Right Earbud) |
|---|---|---|
| Play/Pause | Single tap | Single tap |
| Next Track | Double tap | Double tap |
| Previous Track | Triple tap | Triple tap |
| Volume Up | Press and hold | N/A |
| Volume Down | N/A | Press and hold |
| Answer/End Call | Single tap | Single tap |
| Reject Call | Press and hold for 2s | Press and hold for 2s |
| Activate Voice Assistant | Quadruple tap | Quadruple tap |
5.3 Charging the Earbuds and Case
- Earbuds: Place the earbuds into the charging case. They will automatically begin charging. The LED indicators on the earbuds will show charging status and turn off when fully charged.
- Charging Case: Connect the USB-C cable to the case and a power source. The case's LED indicators will show its charging progress.
6. Maintenance
Proper maintenance ensures the longevity and optimal performance of your earbuds.
- Cleaning: Regularly clean the earbuds, eartips, and charging contacts with a soft, dry, lint-free cloth. Do not use harsh chemicals or abrasive materials.
- Storage: When not in use, always store the earbuds in their charging case to protect them from dust, dirt, and damage.
- Avoid Water: While the earbuds may have some water resistance, avoid submerging them in water or exposing them to excessive moisture.
- Temperature: Store and operate the earbuds within recommended temperature ranges (typically 0°C to 45°C or 32°F to 113°F).
7. Troubleshooting
If you encounter issues with your coioc S25 Wireless Earbuds, try the following solutions:
| Problem | Possible Solution |
|---|---|
| Earbuds not pairing |
|
| No sound from one earbud |
|
| Low volume or poor sound quality |
|
| Charging case not charging |
|
8. Specifications
Key technical specifications for the coioc S25 Wireless Earbuds:
- Model Number: S25
- Brand: coioc
- Connectivity Technology: Wireless
- Wireless Technology: Bluetooth
- Bluetooth Version: 5.3
- Ear Placement: In Ear
- Form Factor: In Ear
- Noise Control: Active Noise Cancellation (ENC for calls)
- Audio Driver Type: Dynamic Driver
- Compatible Devices: Smartphones, Tablets, Laptops, Desktops
- Specific Uses: Music, Communication
- Additional Features: Lightweight
9. Warranty & Support
Your coioc S25 Wireless Earbuds come with a 2-year warranty from the date of purchase, covering manufacturing defects. This warranty does not cover damage caused by misuse, accidents, unauthorized modifications, or normal wear and tear.
For technical support, warranty claims, or further assistance, please contact coioc customer service through the retailer where you purchased the product or visit the official coioc website for contact information.
Please retain your proof of purchase for warranty validation.




