1. Introduction
This manual provides instructions for the proper use and maintenance of your cheero Wireless Open Earphones Smart. Please read this manual thoroughly before using the product to ensure optimal performance and longevity.
The cheero Wireless Open Earphones Smart are designed with an open-ear concept, allowing users to remain aware of their surroundings while enjoying audio. They offer a comfortable, lightweight fit without inserting into the ear canal, resembling an ear cuff.
2. What's in the Box
Upon opening your cheero Wireless Open Earphones Smart package, please verify that all the following items are included:
- cheero Wireless Open Earphones Smart (Left and Right)
- Charging Case
- USB-C Charging Cable
- User Manual (this document)

Image: The cheero Wireless Open Earphones Smart and their charging case, displayed on a clean surface.
3. Product Overview
Familiarize yourself with the components of your cheero Wireless Open Earphones Smart and their charging case.

Image: A diagram illustrating the various parts of the cheero Wireless Open Earphones Smart and their charging case, including the multi-function button, charging terminals, balance port, and USB-C input.
Earphone Components:
- Multi-function Button: Controls playback, calls, and voice assistant.
- Multi-indicator: Displays status such as pairing, charging, and battery level.
- Balance Port: For sound optimization.
- Charging Terminals: Connects with the charging case for power.
- Voice Output Port: Where sound is emitted.
Charging Case Components:
- Battery Indicator: Shows the charging status of the case.
- USB-C Input: Port for charging the case.
4. Setup
4.1. Charging the Earphones and Case
- Charge the Case: Connect the provided USB-C cable to the charging case's USB-C input and the other end to a USB power adapter (not included). The battery indicator on the case will show charging status.
- Charge the Earphones: Place the earphones into the charging case. Ensure they are correctly seated so the charging terminals make contact. The earphone indicators will light up to show they are charging.
- Full Charge: Allow approximately 1.5 hours for a full charge of the earphones and 2 hours for the charging case.
4.2. Bluetooth Pairing
- Initial Pairing: Open the charging case. The earphones will automatically enter pairing mode, and the multi-indicator on the earphones will flash.
- Activate Bluetooth: On your device (smartphone, tablet, etc.), go to Bluetooth settings and turn Bluetooth on.
- Select Device: Look for "cheero Wireless Open Earphones Smart" in the list of available devices and select it to connect.
- Confirmation: Once connected, the earphone indicator will stop flashing, and you may hear an audio prompt confirming the connection.
- Subsequent Use: After initial pairing, the earphones will automatically connect to the last paired device when removed from the case, provided Bluetooth is active on your device.
5. Operating Instructions
5.1. Wearing the Earphones
The cheero Wireless Open Earphones Smart are designed to clip onto your ear, similar to an ear cuff, without blocking the ear canal.
- Identify the Left (L) and Right (R) earphones.
- Gently open the earphone and position it over your earlobe, allowing it to rest comfortably. The sound output should be directed towards your ear canal without entering it.
- Adjust for a secure and comfortable fit. The lightweight design ensures comfort for extended periods.

Image: A person demonstrating how to wear the cheero Wireless Open Earphones Smart, showing their ear cuff-like placement.
5.2. Basic Controls (Multi-function Button)
The multi-function button on each earphone allows control over various functions:
| Action | Function |
|---|---|
| Single Press | Play/Pause music, Answer/End call |
| Double Press (Right Earphone) | Next Track |
| Double Press (Left Earphone) | Previous Track |
| Triple Press (Either Earphone) | Activate Voice Assistant (Siri, Google Assistant) |
| Press and Hold (2 seconds) | Reject Incoming Call |
Note: Volume control is typically managed via your connected device.
6. Maintenance
Proper maintenance ensures the longevity and optimal performance of your earphones.
- Cleaning: Use a soft, dry, lint-free cloth to wipe the earphones and charging case. Do not use abrasive cleaners, alcohol, or chemical solvents.
- Water Resistance: The earphones are rated IPX5 water resistant, meaning they can withstand splashes of water. Do not submerge them in water or expose them to heavy rain. Ensure they are dry before placing them back in the charging case.
- Storage: When not in use, store the earphones in their charging case to protect them from dust and damage. Store in a cool, dry place.
- Charging Port: Keep the USB-C charging port free of dust and debris.

Image: An illustration highlighting the IPX5 water resistance grade of the cheero Wireless Open Earphones Smart.
7. Troubleshooting
If you encounter issues with your cheero Wireless Open Earphones Smart, refer to the following common solutions:
| Problem | Possible Cause / Solution |
|---|---|
| Earphones do not turn on. | Battery may be depleted. Place earphones in the charging case and ensure the case is charged. |
| Cannot pair with device. |
|
| No sound or intermittent sound. |
|
| Charging case not charging. |
|
8. Specifications
| Feature | Detail |
|---|---|
| Model Name | cheero Wireless Open Earphones Smart |
| Item Model Number | CHE-645 |
| Connectivity Technology | Bluetooth |
| Ear Placement | Open Ear |
| Form Factor | Open Ear |
| Water Resistance | IPX5 |
| Battery Type | Nonstandard Battery (included) |
| Manufacturer | cheero |
| Color | White |
9. Warranty and Support
cheero products are designed for reliability and performance. For warranty information, product support, or to report any issues, please contact cheero customer service through their official website or the retailer where the product was purchased.
Please retain your proof of purchase for warranty claims.



