1. Introduction
Thank you for choosing the Btootos A90 Pro Wireless Earbuds. These earbuds are designed to provide a high-quality audio experience with advanced features such as Bluetooth 5.4 connectivity, Environmental Noise Cancellation (ENC) for clear calls, an intuitive LED power display, and IP7 waterproof rating. This manual will guide you through the setup, operation, and maintenance of your new earbuds.
2. Package Contents
Please ensure all items are present in the box:
- A90 Pro Wireless Earbuds (Left/Right)
- Portable Charging Case
- Silicone Earplugs (S / M / L sizes)
- USB-C Charging Cable
- User Manual
Figure 2.1: Package Contents of the Btootos A90 Pro Wireless Earbuds.
Video 2.1: An overview of the Btootos Wireless Earbuds and their noise-cancelling features, presented by the seller.
3. Product Overview
The Btootos A90 Pro earbuds feature a sleek design and advanced audio components for an optimal listening experience.
Figure 3.1: Btootos A90 Pro Wireless Earbuds and Charging Case.
3.1. Audio Technology
Equipped with dual 14.2mm low-distortion composite dynamic drivers, these earbuds deliver rich bass and crisp treble. AAC&SBC audio coding technology ensures high-resolution sound.
Figure 3.2: 14.2mm Large-Size Driver Unit.
3.2. Environmental Noise Cancellation (ENC)
The integrated ENC calling noise cancellation technology, supported by multiple microphones, helps to reduce background noise during calls, ensuring your voice is transmitted clearly.
Figure 3.3: Integrated ENC Noise Reduction Chip.
3.3. LED Power Display
The charging case features an LED display that shows the current charge level of both the case and the individual earbuds, allowing for convenient power management.
Figure 3.4: LED Power Display on Charging Case.
4. Setup
4.1. Initial Charge
Before first use, place both earbuds into the charging case and fully charge the case and earbuds. The LED display will indicate the charging status.
4.2. Pairing with Your Device
- Take both earbuds out of the charging case. Both earbuds will power on and enter pairing mode automatically.
- Enable Bluetooth on your device (smartphone, tablet, laptop).
- Search for "A90 Pro" in the list of available Bluetooth devices and select it to connect. You should hear a voice prompt "Connected" when pairing is successful.
The earbuds will automatically connect to the last paired device when removed from the case, provided Bluetooth is enabled on the device.
Figure 4.1: One-Step Pairing Process.
5. Operating Instructions
The Btootos A90 Pro earbuds feature touch controls for easy management of music and calls.
Figure 5.1: Touch Control Functions.
5.1. Call Management
| Action | Control |
|---|---|
| Answer Call | Tap once |
| Hang Up Call | Press and hold for 2 seconds |
| Refuse Incoming Call | Press and hold for 2 seconds |
5.2. Music Playback
| Action | Control |
|---|---|
| Play/Pause | Tap once |
| Previous Track | Press and hold left earbud for 2 seconds |
| Next Track | Press and hold right earbud for 2 seconds |
| Volume Up | Quickly tap right earbud three times |
| Volume Down | Quickly tap left earbud three times |
5.3. Voice Assistant
| Action | Control |
|---|---|
| Activate Voice Assistant | Tap twice |
6. Charging
The earbuds offer 6-8 hours of playback on a single charge. The portable charging case extends the total listening time to over 36 hours. The case uses a Type-C charging port for efficient and stable charging.
6.1. Charging the Earbuds
Place the earbuds into the charging case. They will automatically begin charging. The LED display on the case will show the individual earbud battery levels.
6.2. Charging the Case
Connect the provided USB-C charging cable to the Type-C port on the charging case and plug the other end into a USB power source. The LED display will show the charging progress of the case.
Video 6.1: A demonstration of the LED display on the Btootos Earbuds charging case, showing battery levels.
7. Maintenance and Care
7.1. IP7 Waterproof Rating
The Btootos A90 Pro earbuds are IP7 waterproof, making them resistant to sweat, rain, and splashes. This makes them suitable for workouts and outdoor activities. However, the charging case is not waterproof.
Figure 7.1: IP7-Rated Dust and Water Resistance.
7.2. Cleaning and Storage
- Regularly clean the earbuds and charging case with a soft, dry cloth.
- Avoid using harsh chemicals or abrasive materials.
- Store the earbuds and case in a cool, dry place away from extreme temperatures.
8. Troubleshooting
If you encounter any issues with your Btootos A90 Pro Wireless Earbuds, please refer to the following common solutions:
| Problem | Solution |
|---|---|
| Earbuds not pairing | Ensure earbuds are fully charged. Turn off and on Bluetooth on your device. Try resetting the earbuds by placing them in the case, closing it, and then reopening. |
| No sound from one earbud | Ensure both earbuds are charged. Try placing both earbuds back in the case, closing it, and then reopening to re-sync. |
| Charging case not charging | Check the USB-C cable and power adapter. Ensure the charging port is clean and free of debris. |
| Poor call quality | Ensure earbuds are properly seated in your ears. Move to a quieter environment if possible. |
| Earbuds falling out | Try different sizes of silicone earplugs to find the most secure and comfortable fit for your ears. |
9. Specifications
| Feature | Detail |
|---|---|
| Model Name | A90 Pro |
| Bluetooth Version | 5.4 |
| Bluetooth Range | 15 Meters |
| Battery Life (Earbuds) | 6-8 Hours |
| Total Playtime (with Case) | Over 36 Hours |
| Charging Time (Earbuds) | 1.5 Hours |
| Charging Port | Type-C |
| Water Resistance Level | IP7 Waterproof |
| Noise Control | Passive Noise Cancellation, Sound Isolation |
| Audio Driver Size | 14.2 Millimeters |
| Control Type | Touch Control |
| Item Weight | 1.76 ounces (50 Grams) |
10. Warranty and Support
Btootos provides a standard warranty for its products. For detailed warranty information, product support, or to report any issues, please refer to the contact information provided in your product packaging or visit the official Btootos website. Please retain your proof of purchase for warranty claims.
