Lenovo EA400 Open True Wireless Earphones User Manual

Introduction

Thank you for choosing the Lenovo EA400 Open True Wireless Earphones. These earphones are designed to provide a comfortable, high-fidelity audio experience with advanced features like Bluetooth 5.4 connectivity, low latency, and 360° panoramic sound effects. This manual will guide you through the setup, operation, and maintenance of your new earphones to ensure optimal performance and longevity.

Package Contents

Please check the box for the following items:

• 2 x Lenovo EA400 Earphones
• 1 x Charging Case
• 1 x USB Type-C Charging Cable
• 1 x User Manual (this document)

Setup

1. Initial Charging

Before first use, fully charge the earphones and the charging case.

1. Place both earphones into the charging case.
2. Connect the USB Type-C charging cable to the charging port on the case and to a power source.
3. The indicator light on the charging case will show the charging status. A full charge for the case takes approximately 1.5 hours.

Note: The earphones have a battery capacity of 25mAh each, and the charging case has a capacity of 200mAh. A single charge provides approximately 5 hours of usage, with the charging case extending total usage time to about 24 hours.

2. Pairing with Your Device

The Lenovo EA400 earphones utilize Bluetooth 5.4 for a stable and efficient connection.

1. Ensure the earphones are charged and placed in the charging case.
2. Open the charging case. The earphones will automatically enter pairing mode.
3. On your smartphone, tablet, laptop, or other Bluetooth-enabled device, go to the Bluetooth settings.
4. Search for available devices and select "Lenovo EA400" from the list.
5. Once connected, you will hear a confirmation tone, and the earphones will be ready for use.

The earphones are widely compatible with Android, iOS, and Windows devices.

Operating Instructions

1. Wearing the Earphones

The EA400 earphones feature an OWS (Open Wearable Stereo) ear clip design, providing a comfortable and stable fit without entering the ear canal. This design allows for private enjoyment of sound while maintaining awareness of your surroundings.

2. Touch Controls

The earphones are equipped with sensitive touch controls for easy management of audio playback and calls.

• Play/Pause: Click once on either earphone.
• Next Song: Double click on the right earphone.
• Previous Song: Double click on the left earphone.
• Answer/Hang Up Call: Click once on either earphone.
• Refuse Call: Triple click on either earphone.
• Wake Up Voice Assistant: Long press either earphone for 3 seconds.
• Volume Control: The earphones support volume control via the connected device.

3. Sound Features

The EA400 earphones deliver HIFI sound quality and 360° panoramic sound effects, enhanced by a high-end composite diaphragm for a more layered and immersive audio experience.

4. Low Latency Mode

Experience low latency audio and video synchronization, ideal for gaming and watching videos, ensuring that audio and visuals are perfectly aligned.

Maintenance

1. Cleaning

• Wipe the earphones and charging case with a soft, dry, lint-free cloth.
• Do not use harsh chemicals, cleaning solvents, or strong detergents.
• Avoid getting moisture in any openings.

2. Storage

• When not in use, store the earphones in their charging case to protect them and keep them charged.
• Store in a cool, dry place, away from extreme temperatures and direct sunlight.

3. Battery Care

• Charge the earphones regularly, even if not used frequently, to maintain battery health.
• Avoid completely draining the battery for extended periods.

Troubleshooting

Common Issues and Solutions

• Earphones not pairing:
  • Ensure both earphones are in the charging case and the case lid is open.
  • Turn off and on Bluetooth on your device.
  • Forget the device in your Bluetooth settings and try pairing again.
  • Ensure earphones and case are sufficiently charged.
• No sound from one earphone:
  • Place both earphones back into the charging case, close the lid, wait a few seconds, then open it again.
  • Check your device's audio balance settings.
• Charging issues:
  • Ensure the charging cable is securely connected to both the case and the power source.
  • Try a different USB Type-C cable and power adapter.
  • Clean the charging contacts on the earphones and inside the case with a dry cotton swab.
• Low volume or poor sound quality:
  • Adjust the volume on your connected device.
  • Ensure the earphones are worn correctly and securely.
  • Check for any obstructions on the earphone speakers.

Specifications

The following table outlines the key technical specifications for the Lenovo EA400 earphones:

User Tips

• Optimal Comfort: Experiment with the ear clip position to find the most comfortable and secure fit for extended wear. The open-ear design is intended for long-term comfort without pain.
• Gaming Performance: For the best gaming experience, ensure your device's Bluetooth is stable and close to the earphones to fully utilize the low latency feature.
• Battery Life Management: To maximize the 24-hour total battery life, always return the earphones to the charging case when not in use.
• Environmental Awareness: The open-ear design allows you to hear your surroundings, which is beneficial for outdoor activities or in office environments where situational awareness is important.

Warranty and Support

Lenovo products are manufactured to the highest quality standards. For any issues or inquiries regarding your Lenovo EA400 earphones, please refer to the warranty information provided at the time of purchase or contact Lenovo customer support. Keep your proof of purchase for warranty claims.