Xiaomi Redmi Buds 4 Wireless Earbuds

1. Product Overview

The Xiaomi Redmi Buds 4 are advanced wireless earbuds designed to provide a superior audio experience with hybrid active noise cancellation and dual transparency modes. They offer long battery life and are optimized for comfortable, extended use with various devices.

Key Features

• Up to 35dB hybrid active noise cancellation for effective isolation of external noise.
• Three ANC level options and an adaptive ANC mode for customized noise control.
• AI noise reduction for clear voice calls in noisy environments.
• Dual transparency mode for easy communication without removing earbuds.
• 10mm dynamic driver with 0.006mm ultra-thin diaphragm for vivid sound.
• Up to 30 hours of total battery life with the charging case, including fast charging support.
• Professionally tuned by Xiaomi Acoustic Lab for enhanced audio quality.

Figure 1: Xiaomi Redmi Buds 4 in their charging case.

Figure 2: Visual representation of the Redmi Buds 4's primary features including ANC, transparency, and battery life.

2. Setup Guide

2.1 Initial Charging

Before first use, ensure both the earbuds and the charging case are fully charged. Place the earbuds into the charging case and connect the case to a power source using a compatible USB-C cable. The indicator light on the case will show charging status.

• A full charge provides up to 6 hours of playback for the earbuds and up to 30 hours total with the charging case (with noise cancellation off).
• Fast charging is supported: 5 minutes of charging can provide up to 1 hour of music playback.

Figure 3: The charging case provides extended battery life for the earbuds.

2.2 Pairing with a Device

1. Open the charging case with the earbuds inside.
2. On your device (smartphone, tablet, etc.), enable Bluetooth.
3. Search for "Redmi Buds 4" in the list of available Bluetooth devices and select it to pair.
4. Once paired, the earbuds are ready for use.

The Redmi Buds 4 utilize Bluetooth 5.2 for a stable and efficient connection.

2.3 Xiaomi Earbuds App

For enhanced control and customization, download the Xiaomi Earbuds App from your device's app store (e.g., Google Play Store). The app allows you to:

• Adjust noise cancellation levels.
• Customize touch controls.
• Perform firmware updates.
• Locate your earbuds by playing a sound.

Figure 4: The Xiaomi Earbuds App provides advanced customization options.

3. Operation

3.1 Touch Controls

The Redmi Buds 4 feature intuitive touch controls on the outer surface of each earbud. Specific functions can be customized via the Xiaomi Earbuds App.

Figure 5: The touch-sensitive area on the earbud for control.

3.2 Active Noise Cancellation (ANC) Modes

The earbuds feature hybrid active noise cancellation up to 35dB, effectively reducing ambient noise. They also offer an adaptive ANC mode that intelligently adjusts based on your environment.

• Light Mode: Suitable for quiet environments like offices or libraries.
• Balanced Mode: Ideal for moderately noisy places such as coffee shops or roadsides.
• Deep Mode: Best for highly noisy environments like metros or airplanes.

Figure 6: The internal structure highlighting the microphones used for active noise cancellation.

Figure 7: Examples of using different ANC modes in various settings.

3.3 Dual Transparency Mode

Long-press the earbud to switch to transparency mode, allowing you to hear your surroundings and engage in conversations without removing the earbuds. An enhanced voice mode is available for clearer communication.

Figure 8: Transparency mode allows for natural conversation while wearing the earbuds.

3.4 In-Ear Detection

Music playback automatically pauses when you take an earbud out and resumes when you put it back in.

Figure 9: In-ear detection automatically pauses and resumes audio.

3.5 Audio Quality

The 10mm dynamic driver with a 0.006mm ultra-thin diaphragm delivers crisp vocals, full lower frequencies, and brighter treble. The earbuds are professionally tuned by Xiaomi Acoustic Lab for optimal sound.

Figure 10: Illustration of the 10mm dynamic driver and ultra-thin diaphragm for superior sound.

4. Maintenance and Care

4.1 Cleaning

Regularly clean your earbuds and charging case to maintain optimal performance and hygiene. Use a soft, dry, lint-free cloth. For stubborn dirt, slightly dampen the cloth with water. Avoid using abrasive materials or harsh chemicals.

4.2 Storage

When not in use, store the earbuds in their charging case to protect them from dust, dirt, and physical damage. Store the case in a cool, dry place away from extreme temperatures.

4.3 Water Resistance

The Redmi Buds 4 are rated as waterproof. However, this rating typically refers to resistance against splashes and sweat, not full submersion. Avoid exposing the earbuds to excessive moisture or submerging them in water to prevent damage.

Figure 11: The earbuds are designed with water resistance for daily use.

5. Troubleshooting

If you encounter issues with your Redmi Buds 4, try the following solutions:

• Earbuds not pairing or connecting:
  • Ensure Bluetooth is enabled on your device and the earbuds are charged.
  • Place both earbuds in the charging case, close the lid, wait a few seconds, then open it again to re-initiate pairing mode.
  • Perform a one-touch reset: With the earbuds in the case, press and hold the function button on the case for several seconds until the indicator light behaves as described in the app or quick start guide (usually flashes white). Then try pairing again.
• No sound or low volume:
  • Check the volume level on your connected device.
  • Ensure the earbuds are properly seated in your ears.
  • Clean any debris from the earbud nozzles and charging contacts.
• Active Noise Cancellation not working effectively:
  • Ensure the earbuds are properly sealed in your ear canal. Try different sized ear tips for a better fit.
  • Check ANC settings in the Xiaomi Earbuds App to ensure the desired mode is selected.
• Battery draining quickly:
  • Ensure the charging case is fully charged.
  • Active Noise Cancellation and Transparency modes consume more power; consider turning them off when not needed.

Figure 12: The app can assist with troubleshooting and offers a one-touch reset option.

6. Technical Specifications

7. Warranty and Support

For detailed warranty information, please refer to the warranty card included with your product packaging or visit the official Xiaomi support website. Keep your proof of purchase for warranty claims.

For further assistance, technical support, or to find the latest firmware updates, please utilize the Xiaomi Earbuds App or visit the official Xiaomi support channels.

Official Product Video: