Introduction
Thank you for choosing the Callez C01 Bluetooth Headset. This manual provides detailed instructions for setting up, operating, and maintaining your headset to ensure optimal performance and longevity. The Callez C01 is designed for clear communication and comfortable wear, featuring Bluetooth 5.0 connectivity, CVC8.0 dual-mic noise cancellation, and long-lasting battery life, making it ideal for various professional and personal uses.

Image: The Callez C01 Bluetooth Headset, black in color, shown alongside its compact black carrying case. The headset features an ear hook design with a long microphone boom.
What's in the Box
Please check the package contents to ensure all items are present:
- Bluetooth Headset (Callez C01)
- Headset Case
- S/M/L Earbuds (Small, Medium, Large)
- Type-C Charging Cable
- User Manual

Image: A visual representation of all items included in the Callez C01 package: the headset, its box, user guide, carrying case, three pairs of ear tips (S, M, L), and a Type-C charging cable.
Product Overview
Familiarize yourself with the various components and controls of your Callez C01 Bluetooth Headset:

Image: A diagram illustrating the Callez C01 headset with labels pointing to its key components: Volume+, Volume-, Mute Button, Light Indicator, Multi-Function Button/Power Button, Type-C Charging Port, Microphone 1, and Microphone 2.
- Volume +: Increases audio volume.
- Volume -: Decreases audio volume.
- Mute Button: Mutes/unmutes the microphone during calls.
- Light Indicator: Displays status (e.g., charging, pairing, connected).
- Multi-Function Button (MFB) / Power Button: Controls power, calls, and music playback.
- Type-C Charging Port: For connecting the charging cable.
- Microphone 1 (Main Mic): Primary microphone for voice input.
- Microphone 2 (Secondary Mic): Assists in noise cancellation.
Setup
1. Charging the Headset
Before first use, fully charge the headset. Use the provided Type-C charging cable.
- Connect the Type-C end of the charging cable to the headset's charging port.
- Connect the USB-A end to a USB power adapter (not included) or a computer's USB port.
- The light indicator will show charging status (e.g., red for charging, blue for fully charged).
- A full charge takes approximately 1.5 hours.

Image: A visual guide demonstrating the Type-C fast charging port and estimated battery life: 8 hours talking time, 16 hours music playing, 192 hours standby time, and 1.5 hours charging time.
2. Pairing with a Device
The Callez C01 uses Bluetooth 5.0 for a fast and stable connection.
- Power On: Press and hold the Multi-Function Button (MFB) for 3-5 seconds until the light indicator flashes blue and red, indicating pairing mode.
- Activate Bluetooth: On your smartphone, tablet, or laptop, enable Bluetooth.
- Search for Devices: In your device's Bluetooth settings, search for available devices.
- Select "C01": From the list, select "C01" to connect.
- Connection Confirmation: Once connected, the light indicator on the headset will flash blue slowly, and you may hear a voice prompt.
Note: Before the headset is connected, double-click the Multi-Function Button to switch between language modes if needed.

Image: The Callez C01 headset positioned between an Android smartphone and an iPhone, illustrating its compatibility and multipoint technology, allowing connection to two devices simultaneously within a 33ft/10m wireless range.
3. Wearing the Headset
The headset is designed for comfortable wear on either ear.
- The ear hook is 180 degrees rotatable, allowing you to switch between left and right ear wear.
- The microphone boom is 270 degrees rotatable for optimal positioning.
- Choose the appropriate ear tip size (S, M, L) for a secure and comfortable fit.

Image: A diagram showing the Callez C01 headset's 180-degree rotatable ear hook and 270-degree rotatable microphone, along with illustrations of how it can be comfortably worn on both the right and left ears.
Operating Instructions
The Callez C01 headset features intuitive controls for managing calls, music, and voice assistants.

Image: A comprehensive diagram detailing the functions of each button on the Callez C01 headset, including Power On/Off, Answer/End Call, Play/Pause, Next/Previous Track, Mute/Unmute, and Siri/Google Assistant activation.
| Function | Action |
|---|---|
| Power On/Off | Press the Multi-Function Button (MFB) for 3-5 seconds. |
| Answer a Call | Press the MFB button once. |
| End a Call | Press the MFB button once. |
| Reject a Call | Press and hold the MFB button for 2 seconds. |
| Play/Pause Music | Press the MFB button once. |
| Next Track | Long press the "Volume +" button. |
| Previous Track | Long press the "Volume -" button. |
| Volume Up | Short press the "Volume +" button. |
| Volume Down | Short press the "Volume -" button. |
| Mute/Unmute Microphone | Press the Mute button once. (Note: Mute function only supports on cell phones.) |
| Activate Voice Assistant (Siri/Google) | Long press the Mute button for 2 seconds. |
| Redial Last Number | Double-click the MFB button. |
Maintenance
Proper care and maintenance will extend the life of your Callez C01 headset.
- Cleaning: Use a soft, dry cloth to clean the headset. Do not use abrasive cleaners or solvents.
- Storage: When not in use, store the headset in its provided carrying case to protect it from dust and damage.
- Temperature: Avoid exposing the headset to extreme temperatures (hot or cold) or high humidity.
- Water Resistance: The headset has a waterproof rating, but it is not designed for submersion. Avoid direct contact with excessive water.
- Charging: Only use the provided Type-C charging cable. Do not attempt to charge with damaged cables or chargers.
Troubleshooting
If you encounter issues with your Callez C01 headset, try the following solutions:
| Problem | Possible Solution |
|---|---|
| Headset won't turn on. | Ensure the headset is fully charged. Press and hold the MFB button for 3-5 seconds. |
| Headset won't pair with device. |
|
| No sound or low volume. |
|
| Microphone not working or poor call quality. |
|
| Headset disconnects frequently. |
|
Specifications
Key technical specifications for the Callez C01 Bluetooth Headset:
| Feature | Detail |
|---|---|
| Model Name | C01 |
| Connectivity Technology | Wireless (Bluetooth) |
| Bluetooth Version | 5.0 |
| Bluetooth Range | Up to 33 feet (10 meters) |
| Noise Control | Active Noise Cancellation (ENC Dual Mic, CVC8.0) |
| Battery Life (Talking Time) | Up to 8 hours |
| Battery Life (Music Time) | Up to 16 hours |
| Standby Time | Up to 192 hours |
| Charging Time | Approximately 1.5 hours |
| Charging Port | Type-C |
| Item Weight | 0.59 ounces (approx. 16.7 grams) |
| Material | Plastic |
| Water Resistance Level | Waterproof (Note: Not for submersion) |
| Compatible Devices | iPhone, Android Cellphones, Tablets, Laptops, and any Bluetooth-supported device. |
Warranty and Support
Callez offers comprehensive support for your product.
- Warranty: The Callez C01 Bluetooth Headset comes with a 2-year warranty.
- Money-Back Guarantee: A 45-day money-back guarantee is offered.
- Contact Support: For any questions, technical assistance, or warranty claims, please refer to the contact information provided in the physical user manual included with your product or visit the official Callez website.
- Online Resources: Additional support and FAQs may be available on the Callez Store on Amazon.



