Edifier K750W Wireless Stereo Headset User Manual

1. Introduction

Thank you for choosing the Edifier K750W Wireless Stereo Headset. This headset is designed to provide a superior audio experience for calls, music, and various multimedia applications. Featuring advanced AI call noise cancellation, a detachable swivel microphone, long-lasting battery life, and multipoint Bluetooth 5.4 connectivity, the K750W offers versatility and comfort for all-day use.

This manual provides detailed instructions on how to set up, operate, and maintain your headset to ensure optimal performance and longevity.

2. Package Contents

Please check the contents of your package to ensure all items are present:

• Edifier K750W Wireless Stereo Headset
• Detachable Swivel Microphone
• USB-A to USB-C Charging Cable
• User Manual (this document)

Image: The Edifier K750W headset with its detachable microphone.

3. Product Overview

The Edifier K750W headset features a lightweight, ergonomic design for extended comfort. Key components include:

• Earcups: Soft, circum-aural earcups provide comfort and passive noise isolation.
• Headband: Adjustable for a secure and comfortable fit.
• Controls: Integrated buttons on the earcup for power, volume, and multi-function operations.
• Microphone Port: Dedicated port for attaching the detachable swivel microphone.
• USB-C Charging Port: For convenient and fast charging.
• 40mm Dynamic Drivers: Deliver rich and delicate musical sound effects.

Image: An illustration showing the internal structure of the 40mm dynamic driver.

Image: A person wearing the Edifier K750W headset, highlighting its comfortable and lightweight design (weighs only 178 grams).

4. Setup

4.1 Charging the Headset

Before first use, fully charge the headset. Connect the provided USB-A to USB-C charging cable to the headset's USB-C port and a power source (e.g., computer USB port, USB wall adapter).

• A full charge provides up to 55 hours of music playback or 33 hours of talk time.
• The headset supports fast charging: 10 minutes of charge provides approximately 4.5 hours of use.
• The charging indicator light will show the charging status.

Image: The headset being charged, illustrating its 55 hours of music mode battery life, 33 hours of sidetone mode, and fast charging capability (10 minutes charge for 4.5 hours use).

4.2 Attaching the Microphone

The K750W features a detachable swivel microphone for clear voice pickup during calls. To attach:

1. Locate the microphone port on the left earcup.
2. Align the microphone's 3.5mm jack with the port and insert firmly until it clicks into place.
3. Adjust the flexible boom arm to position the microphone optimally near your mouth.

To detach, gently pull the microphone straight out from the port.

Image: The headset shown with its removable and adjustable boom microphone.

4.3 Bluetooth Pairing

The K750W uses Bluetooth 5.4 for fast, stable, and energy-efficient wireless connection.

1. Power On: Press and hold the multi-function button until the indicator light flashes, indicating pairing mode.
2. Enable Bluetooth: On your device (smartphone, laptop, etc.), enable Bluetooth.
3. Select Device: In your device's Bluetooth settings, select "Edifier K750W" from the list of available devices.
4. Confirm Connection: Once paired, the headset will provide an audio prompt, and the indicator light will change.

Image: An illustration of the Bluetooth V5.4 chip, emphasizing faster transfer speeds, greater stability, and reduced power consumption.

4.4 Multipoint Connection

The K750W supports multipoint connection, allowing you to connect to two Bluetooth devices simultaneously (e.g., a laptop and a smartphone). This enables seamless switching between audio sources.

1. Pair the headset with the first device as described in section 4.3.
2. Disconnect the headset from the first device (or put the headset back into pairing mode if it automatically reconnects).
3. Pair the headset with the second device.
4. Reconnect the headset to the first device from its Bluetooth settings. The headset should now be connected to both devices.

Audio will automatically switch to the device that is actively playing media or receiving a call.

Image: The headset demonstrating multipoint connectivity, simultaneously linked to a laptop playing music and a smartphone receiving a call.

5. Operating Instructions

5.1 Basic Controls

5.2 AI Call Noise Cancellation

The K750W integrates AI-based noise reduction technology with two built-in anti-noise microphones. This system filters out ambient sounds and prioritizes your voice, minimizing background noise for clearer calls. This feature is automatically active when using the microphone for calls.

Image: A person wearing the headset, illustrating the auditory safety protection feature, keeping volume below 85dB.

5.3 Edifier ConneX App

Enhance your experience with the Edifier ConneX App, available for smartphones. The app allows you to:

• Adjust the equalizer for optimal sound.
• Rename your headset.
• Locate lost earbuds (if applicable, though primarily for finding the headset).
• Access additional settings and features.

Download the Edifier ConneX App from your device's app store or by scanning the QR code below:

Image: Screenshots of the Edifier ConneX App, showing options to adjust the equalizer, rename the headset, and find lost devices.

6. Maintenance

Proper care and maintenance will extend the life of your Edifier K750W headset.

• Cleaning: Use a soft, dry cloth to clean the earcups and headband. Do not use liquid cleaners or abrasive materials.
• Storage: Store the headset in a cool, dry place away from direct sunlight and extreme temperatures.
• Battery Care: To preserve battery life, avoid fully discharging the headset frequently. Charge it regularly, even if not in use for extended periods.
• Water Resistance: The headset is not waterproof. Avoid exposure to water or excessive moisture.

7. Troubleshooting

If you encounter issues with your Edifier K750W headset, please refer to the following common problems and solutions:

If the issue persists after trying these solutions, please contact Edifier customer support.

8. Specifications

Detailed technical specifications for the Edifier K750W headset:

9. Warranty and Support

The Edifier K750W headset comes with a manufacturer's warranty. Please refer to your purchase documentation for specific warranty terms and conditions.

• Warranty Period: 1 Year (from date of purchase).
• Support: For technical assistance, troubleshooting beyond this manual, or warranty claims, please contact Edifier customer support through their official website or the contact information provided with your product.

Please retain your proof of purchase for warranty purposes.