1. Introduction
This manual provides detailed instructions for the proper use, setup, and maintenance of your Btootos A90 Pro Wireless Earbuds. Please read this manual thoroughly before using the product to ensure optimal performance and longevity.
2. What's in the Box
Verify that all items are present in the package:
- A90 Pro Wireless Earbuds (Left/Right)
- Portable Charging Case
- Silicone Earplugs (S / M / L sizes)
- USB-C Charging Cable
- User Manual
Image: Contents of the Btootos A90 Pro Wireless Earbuds package.
3. Product Overview
The Btootos A90 Pro Wireless Earbuds are designed for a high-quality audio experience with advanced features.
Earbuds and Charging Case
Image: Btootos A90 Pro Wireless Earbuds in their charging case.
The charging case features an LED power display that indicates the battery level of both the case and individual earbuds, allowing for precise monitoring of charge status.
Image: LED power display on the charging case.
Key Features
- Bluetooth 5.4 Technology: Ensures stable and fast wireless connection with low latency.
- ENC Noise Reduction: Enhances call clarity by reducing environmental noise.
- 14.2mm Dynamic Drivers: Delivers clear audio with rich bass.
- IP7 Waterproof Rating: Provides resistance against sweat and rain.
- Touch Controls: Intuitive control for music playback, calls, and voice assistant.
- Extended Battery Life: Up to 36 hours of total playback with the charging case.
Image: Illustration of the 14.2mm large-size driver unit.
Image: Demonstrating ENC Noise Reduction in use.
Image: Advanced Bluetooth 5.4 Technology illustration.
4. Setup
4.1 Charging the Earbuds and Case
Before first use, fully charge the earbuds and charging case.
- Place the earbuds into the charging case.
- Connect the USB-C charging cable to the charging port on the case and a power source.
- The LED display on the case will show the charging status. A full charge is indicated when the display shows 100%.
A full charge provides approximately 6-8 hours of playback for the earbuds, and the charging case extends total usage to up to 36 hours.
Image: Battery life and charging illustration.
4.2 Pairing with Your Device
The earbuds feature one-step automatic pairing.
- Open the charging case. The earbuds will automatically power on and enter pairing mode.
- On your device (smartphone, tablet, laptop), enable Bluetooth.
- Search for available Bluetooth devices and select "A90 Pro" from the list.
- Once connected, the earbuds are ready for use. They will automatically reconnect to the last paired device when removed from the case.
Image: One-step pairing instructions.
5. Operating Instructions
5.1 Wearing the Earbuds
For optimal sound quality and comfort, choose the correct silicone earplug size and ensure the earbuds are properly seated in your ears.
- Select the ear tips (S, M, L) that provide a snug and comfortable fit.
- Gently insert each earbud into your ear canal and rotate slightly until it feels secure.
Image: Proper wearing and ear tip selection.
5.2 Touch Controls
The earbuds feature touch-sensitive areas for controlling various functions:
| Action | Function |
|---|---|
| Single Tap | Play/Pause Music, Answer/End Call |
| Double Tap (Left Earbud) | Previous Track |
| Double Tap (Right Earbud) | Next Track |
| Triple Tap (Left Earbud) | Volume Down |
| Triple Tap (Right Earbud) | Volume Up |
| Long Press (2 seconds) | Activate Voice Assistant, Reject Call |
Image: Touch control guide.
6. Water Resistance (IP7 Rating)
The Btootos A90 Pro Wireless Earbuds are rated IP7 waterproof, meaning they are protected against the effects of temporary immersion in water. This makes them suitable for use during workouts, in light rain, or when exposed to sweat.
- Do not intentionally submerge the earbuds for extended periods.
- Ensure the earbuds are dry before placing them back into the charging case to prevent damage.
Image: IP7 Waterproof feature.
7. Maintenance
7.1 Cleaning
Regular cleaning helps maintain sound quality and hygiene.
- Use a soft, dry, lint-free cloth to wipe the earbuds and charging case.
- For ear tips, remove them from the earbuds and clean with a mild soap solution, then rinse thoroughly and dry completely before reattaching.
- Avoid using abrasive materials, alcohol, or chemical cleaners.
7.2 Storage
When not in use, store the earbuds in their charging case to protect them from dust and damage.
- Store in a cool, dry place away from extreme temperatures.
- Avoid prolonged exposure to direct sunlight.
8. Troubleshooting
If you encounter issues with your earbuds, refer to the following common solutions:
- Earbuds not pairing:
- Ensure earbuds are charged.
- Turn off Bluetooth on your device, then turn it back on.
- Forget "A90 Pro" from your device's Bluetooth list and attempt to pair again.
- Restart your device.
- Only one earbud working:
- Ensure both earbuds are charged.
- Place both earbuds back into the charging case, close the lid, wait a few seconds, then open the lid and try again.
- Perform a factory reset if available (refer to specific instructions if provided with your product, or contact support).
- Charging issues:
- Check the USB-C cable and charging adapter for damage.
- Ensure the charging contacts on the earbuds and in the case are clean and free of debris.
- Try a different charging cable or power source.
- Low volume or poor sound quality:
- Adjust the volume on both your device and the earbuds.
- Ensure the ear tips are the correct size and provide a good seal in your ear canal.
- Clean any earwax or debris from the earbud nozzles.
If these steps do not resolve the issue, please contact customer support.
9. Specifications
| Feature | Detail |
|---|---|
| Model Name | A90 Pro |
| Brand | Btootos |
| Connectivity Technology | Wireless (Bluetooth 5.4) |
| Bluetooth Range | Up to 15 meters |
| Noise Control | Passive Noise Cancellation, Sound Isolation, ENC Calling Noise Cancellation |
| Audio Driver Type | Dynamic Driver |
| Audio Driver Size | 14.2 Millimeters |
| Control Type | Touch Control |
| Earbud Battery Life | 6-8 hours (single charge) |
| Total Playback Time | Up to 36 hours (with charging case) |
| Charging Case Battery Capacity | 300 Milliamp Hours |
| Water Resistance Level | IP7 Waterproof |
| Item Weight | 0.1 Kilograms (earbuds) |
| Included Components | A90 Pro Wireless Earbuds(L/R), Portable charging box, Silicone earplugs (S / M / L), USB-C charging cable, User Manual |
10. Warranty and Support
10.1 Warranty Information
Btootos products typically come with a standard manufacturer's warranty. Please refer to the warranty card included in your product packaging or visit the official Btootos website for specific warranty terms and conditions.
10.2 Customer Support
For technical assistance, troubleshooting beyond this manual, or warranty claims, please contact Btootos customer support through their official website or the contact information provided in your product documentation.
You can also visit the Btootos Store on Amazon for more information.
