Btootos A90 Pro Wireless Earbuds User Manual

1. Introduction

Thank you for choosing the Btootos A90 Pro Wireless Earbuds. These earbuds feature advanced Bluetooth 5.4 technology, Environmental Noise Cancellation (ENC) for clear calls, an IP7 waterproof rating, and an LED power display. This manual provides detailed instructions to help you get the most out of your new earbuds.

2. What's in the Box

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

Image: The package contents for the Btootos A90 Pro Wireless Earbuds, showing the earbuds, charging case, USB-C charging cable, three pairs of silicone earplugs (S/M/L), and the user manual.

• Btootos A90 Pro Wireless Earbuds (L/R)
• Portable Charging Case
• Silicone Earplugs (S / M / L)
• USB-C Charging Cable
• User Manual

3. Product Overview

The Btootos A90 Pro earbuds are designed for comfort and high-quality audio. The charging case features an LED display to show battery levels.

Image: The Btootos A90 Pro wireless earbuds in their charging case, displaying battery levels on the LED screen.

Acoustic Design

Each earbud incorporates a 14.2mm speaker and nano-scale material for clear sound reproduction.

Image: An exploded view diagram of a Btootos A90 Pro earbud, showing the 14.2mm speaker and internal components responsible for acoustic performance.

Environmental Noise Cancellation (ENC)

The earbuds feature a built-in ENC noise reduction chip and a noise-cancelling microphone to reduce background noise by up to 40dB during calls.

Image: A diagram showing the ENC chip and noise-cancelling microphone within a Btootos A90 Pro earbud, illustrating its noise reduction capability.

4. Setup

4.1 Charging the Earbuds and Case

Before first use, fully charge the earbuds and charging case. The case features a Type-C charging port.

Image: The Btootos A90 Pro charging case connected to a USB-C cable, indicating over 36 hours of total playtime and 6-8 hours per earbud charge.

• Connect the provided USB-C cable to the charging port on the case and a power source.
• The LED display on the case will show the charging status and battery percentage.
• Place the earbuds into the charging case; they will begin charging automatically.
• A full charge provides 6-8 hours of earbud usage, with the charging case extending total playtime to approximately 36 hours.

4.2 Digital Power Display

The LED display on the charging case provides real-time battery information for both the case and individual earbuds.

Image: The digital LED display on the charging case, showing the remaining power of the case and the battery levels of the left and right earbuds.

4.3 Pairing with Your Device

The earbuds utilize Bluetooth 5.4 for a stable and fast connection up to 15 meters.

Image: A visual guide demonstrating the one-step pairing process: open the case to power on and connect, close to power off and charge. A phone shows the earbuds connected via Bluetooth.

1. Open the charging case. The earbuds will automatically power on and enter pairing mode.
2. On your device (smartphone, tablet, laptop), enable Bluetooth.
3. Search for available Bluetooth devices and select "A90 Pro" from the list.
4. Once connected, you will hear a confirmation tone, and the earbuds will be ready for use.
5. The earbuds will automatically reconnect to the last paired device when removed from the case.

4.4 Fitting the Earbuds

For optimal sound quality and comfort, choose the correct size silicone earplugs (S, M, L) and ensure a secure fit in your ears.

• Gently insert the earbud into your ear canal.
• Rotate the earbud slightly until it feels snug and comfortable.
• Experiment with different ear tip sizes to find the best seal for your ears.

5. Operating Instructions

5.1 Touch Controls

The earbuds feature touch-sensitive controls for various functions:

Image: A visual representation of the touch control functions on the Btootos A90 Pro earbuds.

5.2 Single and Dual Earbud Mode

The earbuds support both single and dual earbud usage, allowing for flexible listening experiences.

Image: Illustration of the single and dual earbud modes, demonstrating the flexibility to use one or both earbuds.

• To use a single earbud: Simply take one earbud out of the case. It will automatically connect to your device.
• To use both earbuds: Take both earbuds out of the case. They will automatically pair with each other and then connect to your device.
• You can switch between single and dual modes seamlessly by placing one earbud back into the case or taking the second one out.

6. Maintenance

6.1 Cleaning

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

6.2 Water Resistance (IP7 Rated)

The Btootos A90 Pro earbuds are IP7 waterproof, meaning they are protected against immersion in water up to 1 meter for 30 minutes. They are resistant to sweat and rain, making them suitable for workouts and outdoor activities.

Image: The Btootos A90 Pro earbuds demonstrating their IP7 waterproof capability, resistant to sweat and rain.

Note: The charging case is not waterproof. Do not expose the charging case to water or moisture.

6.3 Storage

When not in use, store the earbuds in their charging case to protect them and keep them charged.

7. Troubleshooting

If you encounter issues, try the following solutions:

• Earbuds not pairing: Ensure both earbuds are charged. Place them back in the case, close it, then open it again to re-initiate pairing mode.
• No sound: Check the volume on your device and on the earbuds. Ensure the earbuds are properly connected to your device.
• Connection drops: Ensure you are within the 15-meter Bluetooth range. Avoid obstacles between your device and the earbuds.
• Charging issues: Verify the USB-C cable is securely connected to both the case and the power source. Check if the charging port is clean.
• One earbud not working: Try resetting the earbuds by placing both back in the case, closing it for a few seconds, then reopening.

8. Specifications

9. Safety Information

• Avoid listening at high volume levels for extended periods to prevent hearing damage.
• Do not use the earbuds in situations where inability to hear ambient sounds could be dangerous (e.g., driving, cycling, walking in traffic).
• Keep the earbuds and charging case away from extreme temperatures, direct sunlight, and moisture.
• Keep out of reach of children and pets to prevent accidental ingestion of small parts.
• Dispose of batteries and electronic components responsibly according to local regulations.

10. Warranty and Support

Btootos products are manufactured with quality and performance in mind. For any product-related inquiries, technical support, or warranty claims, please contact Btootos customer service through your purchase platform or the official Btootos website.

Please retain your proof of purchase for warranty purposes.