Langsdom Zeta True Wireless ANC Earbuds User Manual

Introduction

This manual provides detailed instructions for the use and maintenance of your Langsdom Zeta True Wireless ANC Earbuds. Please read this manual thoroughly before using the product to ensure proper operation and to maximize its lifespan.

Image: The Langsdom Zeta True Wireless ANC Earbuds, white and black, resting in their open charging case. The earbuds feature a sleek design with a light indicator.

Package Contents

Verify that all items are present in your package:

• Langsdom Zeta True Wireless ANC Earbuds (Left and Right)
• Charging Case
• USB Charging Cable
• User Manual
• Multiple sizes of Silicone Eartips (S/M/L)

Image: An exploded view showing the Langsdom Zeta earbuds, the charging case, and three different sizes of silicone eartips (Small, Medium, Large) for a customized fit.

Setup

1. Initial Charging

1. Place both earbuds into the charging case.
2. Connect the charging case to a power source using the provided USB cable.
3. The indicator lights on the case and earbuds will show charging status. Ensure a full charge before first use (approximately 1.5-2 hours).

2. Bluetooth Pairing

1. Open the charging case. The earbuds will automatically enter pairing mode, indicated by a flashing light on the earbuds.
2. On your device (smartphone, tablet, laptop), enable Bluetooth.
3. Search for "Langsdom Zeta" in the list of available Bluetooth devices.
4. Select "Langsdom Zeta" to connect. Once connected, the earbud indicator lights will turn off or show a steady light.
5. For subsequent use, the earbuds will automatically connect to the last paired device when removed from the case.

3. App Installation (Optional)

For enhanced control and customization, download the Langsdom App from your device's app store.

• Customize EQ presets.
• Adjust Active Noise Cancellation (ANC) and Transparency levels.
• Set auto-off timers.
• Install firmware updates.

Operating Instructions

Touch Controls

The Langsdom Zeta earbuds feature intuitive touch controls on each earbud. Specific gestures control various functions:

Active Noise Cancellation (ANC) and Transparency Mode

The earbuds feature Hybrid Active Noise Cancellation to reduce ambient noise and a Transparency Mode to allow you to hear your surroundings.

• ANC Mode: Reduces external noise by up to 30dB, ideal for noisy environments.
• Transparency Mode: Amplifies ambient sounds, allowing you to stay aware of your surroundings without removing the earbuds.
• Normal Mode: Standard audio playback without noise cancellation or transparency.

Cycle through these modes by performing a long press (2 seconds) on either earbud.

Image: A close-up of a Langsdom Zeta earbud illustrating sound waves being cancelled, representing the dual-mic ANC feature. This highlights the noise reduction capability.

Call Management

The earbuds are equipped with Environmental Noise Cancellation (ENC) for clear calls.

• Answer/End Call: Single tap on either earbud.
• Reject Call: Long press (2 seconds) on either earbud.

Game Mode

Activate Game Mode for ultra-low latency audio-visual synchronization, enhancing your gaming experience.

• Refer to the Langsdom App for specific instructions on activating Game Mode.
• This mode reduces audio delay to as low as 45ms.

Image: Langsdom Zeta earbuds superimposed over a mobile gaming scene, with a prominent "45ms" indicating ultra-low latency for gaming.

Maintenance

Cleaning

• Regularly clean the earbuds and charging case with a soft, dry, lint-free cloth.
• Remove eartips and clean them with mild soap and water, then dry thoroughly before reattaching.
• Avoid using abrasive materials, solvents, or chemical cleaners.

Storage

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

Water and Dust Resistance

The Langsdom Zeta earbuds are IP54-rated, meaning they are resistant to dust and splashes of water.

• They are suitable for workouts and light rain.
• Do not submerge the earbuds in water or expose them to heavy rain or strong jets of water.
• The charging case is not water-resistant.

Image: A person exercising outdoors while wearing Langsdom Zeta earbuds, demonstrating their suitability for sports and outdoor activities due to IP54 dust and water resistance.

Troubleshooting

If you encounter issues, try the following solutions:

• No Sound/Connection Issues:
  • Ensure earbuds are charged.
  • Turn off and on Bluetooth on your device.
  • Forget "Langsdom Zeta" from your device's Bluetooth list and re-pair.
  • Ensure earbuds are within Bluetooth range (typically 10 meters).
• One Earbud Not Working:
  • Place both earbuds back into the charging case, close the lid, wait a few seconds, then open and try again.
  • Ensure both earbuds are charged.
• Charging Issues:
  • Check the charging cable and power adapter.
  • Ensure charging contacts on earbuds and case are clean and free of debris.
• Poor Call Quality:
  • Ensure earbuds are properly seated in your ears.
  • Check for strong wind or excessive background noise.

Specifications

Image: A visual representation of the Langsdom Zeta earbuds highlighting their lightweight design, with "3.7g" prominently displayed, indicating the weight of each earbud.

Warranty and Support

Langsdom products are designed for reliability and performance. For warranty information and customer support, please refer to the official Langsdom website or contact your retailer.

• Online Support: Visit the official Langsdom website for FAQs, troubleshooting guides, and contact information.
• Protection Plans: Extended protection plans may be available for purchase from your retailer.

For further assistance, please contact Langsdom customer service.