1. Product Overview
The MAIRDI M890CBTENC is a monaural Bluetooth headset designed for clear communication in various professional and personal settings. It features advanced Bluetooth 5.2 technology, AI noise-cancelling microphone, and multipoint pairing for seamless connectivity across devices. Enjoy extended usage with up to 40 hours of talk and music time.

Figure 1: MAIRDI M890CBTENC Monaural Bluetooth Headset
Key Features:
- Bluetooth V5.2 Connectivity: Ensures fast transmission, stable connection, and low power consumption.
- AI Noise-Cancelling Microphone: Filters out up to 98% of background noise for crystal-clear calls.
- 40 Hours Battery Life: Provides extended talk and music time on a single charge.
- Multipoint Pairing: Connects to two Bluetooth devices simultaneously (e.g., PC and smartphone).
- Charging Base with Bluetooth Receiver: Enables plug-and-play functionality for PCs without built-in Bluetooth.
- 330-Degree Rotatable Microphone Boom: Allows for flexible positioning on either side of the head.
- Adjustable Headband & Soft Ear Cushions: Designed for supreme comfort during prolonged use.
- Wide Compatibility: Works with PC, laptop, desktop, Mac, smartphones, and communication platforms like Microsoft Teams, Zoom, Cisco Jabber, etc.

Figure 2: Headset compatibility with various communication platforms.
2. Package Contents
Verify that all items listed below are included in your package:
- MAIRDI M890CBTENC Bluetooth Headset
- Charging Base with integrated Bluetooth receiver
- USB Charging Cable
- User Guide
- Carry Pouch

Figure 3: Headset, charging base, and USB cable included in the package.
3. Setup
3.1 Charging the Headset
Before first use, fully charge the headset. There are two methods for charging:
- Using the Charging Base: Place the headset onto the charging base. Ensure the charging contacts align. The headset will begin charging automatically.
- Using the USB Cable: Connect the provided USB cable directly to the headset's charging port and to a USB power source (e.g., computer USB port, wall adapter).
A full charge takes approximately 2 hours and provides up to 40 hours of talk and music time.

Figure 4: Headset battery life indication.
3.2 Connecting to PC (via Charging Base/Dongle)
For PCs without built-in Bluetooth, or for a more stable connection, use the charging base as a Bluetooth receiver:
- Connect the charging base to your PC's USB port using the provided USB cable.
- The PC will automatically recognize the charging base as a sound device.
- Ensure the headset is powered on. It will automatically pair with the charging base.
- Select the headset as your audio input/output device in your PC's sound settings.

Figure 5: Headset connected to a laptop via its charging base.
3.3 Connecting via Bluetooth
To connect the headset directly to a Bluetooth-enabled device (PC, laptop, smartphone):
- Ensure the headset is powered off.
- Press and hold the Multifunction button on the headset until the LED indicator flashes blue and red, indicating pairing mode.
- On your device, enable Bluetooth and search for new devices.
- Select "MAIRDI M890CBTENC" from the list of available devices.
- Once connected, the LED indicator on the headset will turn solid blue.

Figure 6: Headset wirelessly connected to multiple devices.
4. Operating Instructions
4.1 Controls Overview
The headset features intuitive controls for managing calls and audio playback:

Figure 7: Headset control buttons.
- Power On/Off Switch: Located on the earcup, slide to power the headset on or off.
- Multifunction Button: Press once to answer/end calls, play/pause music. Long press for voice assistant.
- Volume Up/Next Track Button (+): Press to increase volume. Long press to skip to the next track.
- Volume Down/Previous Track Button (-): Press to decrease volume. Long press to go to the previous track.
- Microphone Mute Button: Located on the microphone boom, press to mute or unmute the microphone.
4.2 Microphone Usage
The microphone boom can be rotated 330 degrees to position it on either your left or right side. Adjust the boom so the microphone is close to your mouth for optimal voice pickup. The AI noise-cancelling technology actively reduces ambient sounds, ensuring your voice is clear to the listener.

Figure 8: Microphone with AI noise-cancelling feature.
4.3 Multipoint Pairing
The headset supports connecting to two Bluetooth devices simultaneously. For example, you can be connected to your laptop for a video conference and your smartphone for incoming calls. The headset will intelligently switch between devices as needed.
4.4 Busy Light
The integrated busy light on the headset indicates when you are on a call, signaling to others that you are occupied and should not be disturbed.
Video 1: This video provides a quick overview of the MAIRDI M890CBTENC Bluetooth Headset, highlighting its key features such as the rotatable microphone, noise-cancelling capabilities, battery life, multipoint connectivity, and control buttons including the busy light.
5. Maintenance
5.1 Cleaning
- Wipe the headset and charging base with a soft, dry cloth.
- Do not use harsh chemicals or abrasive materials.
- Keep charging contacts clean and free of debris.
5.2 Storage
- Store the headset in a cool, dry place away from direct sunlight and extreme temperatures.
- Use the provided carry pouch for protection when traveling.
5.3 Battery Care
- Avoid fully discharging the battery frequently.
- Charge the headset regularly, even if not in use, to maintain battery health.
6. Troubleshooting
If you encounter issues with your headset, refer to the table below for common problems and solutions:
| Issue | Possible Solution |
|---|---|
| Headset does not power on | Ensure the headset is charged. Connect to the charging base or directly via USB cable. |
| Cannot pair via Bluetooth | Ensure the headset is in pairing mode (flashing blue/red LED). Check your device's Bluetooth settings and try re-pairing. Ensure no other devices are actively connected. |
| No sound or poor audio quality | Check volume levels on both the headset and your connected device. Ensure the headset is selected as the default audio device. Move closer to the connected device to avoid interference. |
| Microphone not working | Ensure the microphone is not muted (check the mute button on the boom). Verify the headset microphone is selected as the input device in your software settings. |
| Charging issues | Ensure the USB cable and charging base contacts are clean and properly connected. Try a different USB port or power adapter. |
7. Specifications
| Feature | Specification |
|---|---|
| Brand | MAIRDI |
| Model Number | M890CBTENC |
| Style Name | Monaural |
| Connectivity Technology | Wireless (Bluetooth) |
| Bluetooth Version | 5.2 |
| Noise Control | Sound Isolation, AI Noise Cancelling Microphone |
| Audio Driver Type | Dynamic Driver |
| Frequency Range | 20 Hz - 20,000 Hz |
| Battery Average Life | 40 Hours |
| Control Type | Volume Control, Touch |
| Compatible Devices | PC, laptop, desktop, Mac, smartphone, cell phone |
| Item Weight | 0.51 Kilograms |
8. Warranty and Support
MAIRDI products are manufactured to the highest quality standards. This product is covered by a limited warranty against defects in materials and workmanship. For specific warranty terms and conditions, please refer to the warranty card included in your package or visit the official MAIRDI website.
For technical support, troubleshooting assistance, or any inquiries regarding your MAIRDI M890CBTENC Bluetooth Headset, please contact MAIRDI customer service through the contact information provided on the official website or your purchase platform.





