Introduction
Thank you for choosing the Btootos A90 Pro Wireless Earbuds. This manual provides essential information for setting up, operating, and maintaining your earbuds to ensure optimal performance and longevity. Please read it carefully before use.
What's in the Box?
- A90 Pro Wireless Earbuds (L/R)
- Portable Charging Box
- Silicone Earplugs (S / M / L)
- USB-C Charging Cable
- User Manual
Setup
1. Charging the Earbuds and Case
Before first use, fully charge the earbuds and the charging case.
- Place the earbuds into the charging case. Ensure they are properly seated.
- Connect the provided USB-C charging cable to the charging case and a compatible USB power source.
- The LED display on the charging case will show the battery percentage of the case and individual earbuds.
- A full charge for the earbuds takes approximately 1.5 hours. The charging case provides multiple charges for the earbuds.
Image: The charging case with its digital LED display indicating battery levels for both the case and individual earbuds.
2. Pairing with Your Device
The earbuds feature automatic pairing for convenience.
- Open the charging case and remove both earbuds. They will automatically power on and enter pairing mode.
- On your device (smartphone, tablet, laptop), go to Bluetooth settings.
- Search for available devices and select "A90 Pro" from the list.
- Once connected, you will hear a voice prompt confirming the connection.
Image: A visual representation of the earbuds in their charging case next to a smartphone displaying the Bluetooth pairing process, showing 'A90 Pro' as a connected device.
3. Fitting the Earbuds
For optimal sound quality and comfort, choose the correct silicone ear tip size.
- The earbuds come with pre-installed medium-sized ear tips. Small and large sizes are included in the box.
- Gently insert the earbuds into your ears and rotate them slightly to find a secure and comfortable fit.
- A proper fit helps with passive noise cancellation and sound isolation.
Image: A detailed diagram illustrating the internal 14.2mm speaker and nano-scale material of an earbud, alongside an explanation of how different ear cap sizes improve fit and noise reduction.
Operating Instructions
Touch Controls
The A90 Pro earbuds feature intuitive touch controls on each earbud for easy management of music and calls.
| Function | Action |
|---|---|
| Play/Pause Music | Tap twice on either earbud |
| Next Track | Press and hold the right earbud for 2 seconds |
| Previous Track | Press and hold the left earbud for 2 seconds |
| Volume Up | Single tap on the right earbud |
| Volume Down | Single tap on the left earbud |
| Answer/End Call | Tap once on either earbud |
| Reject Call | Press and hold either earbud for 2 seconds |
| Activate Voice Assistant (Siri/Google Assistant) | Quickly tap three times on either earbud |
Image: A visual guide to the touch controls on the earbuds, showing single, double, and long-press actions for music playback, call management, and voice assistant activation.
Single and Dual Earbud Mode
The earbuds can be used individually (mono mode) or together (stereo mode). Simply remove one earbud from the case to use it in mono mode. To switch to stereo, take out the second earbud.
Key Features
- Bluetooth 5.4 Technology: Experience a faster, more stable, and low-latency connection with a range of up to 15 meters. The earbuds automatically pair with your last connected device.
- Enhanced ENC Noise Reduction: Equipped with dual 14.2mm low-distortion composite dynamic drivers and ENC (Environmental Noise Cancellation) technology, these earbuds deliver clear audio for calls by reducing background noise by up to 40dB.
- LED Power Display: The charging case features a digital LED display that clearly shows the remaining battery level of both the case and each earbud, ensuring you always know when to recharge.
- Extended Battery Life & Fast Charging: Enjoy 6-8 hours of usage on a single charge, with the charging case extending total playtime to over 36 hours. The Type-C charging port allows for quick recharging of the case.
- IP7 Waterproof Design: With an ultra-light Nano coating, the earbuds are IP7 waterproof, making them resistant to sweat and rain. Ideal for sports and outdoor activities.
Maintenance
- Cleaning: Regularly clean the earbuds and charging contacts with a soft, dry cloth. Remove silicone ear tips and clean them with mild soap and water, then dry thoroughly before reattaching.
- Storage: Store the earbuds in their charging case when not in use to protect them from dust, damage, and to keep them charged.
- Battery Care: Avoid fully discharging the battery frequently. Charge the case regularly, even if not in daily use, to prolong battery life.
Troubleshooting
| Problem | Solution |
|---|---|
| Earbuds not pairing/connecting | Ensure Bluetooth is enabled on your device. Place earbuds back in the case, close, then reopen and try pairing again. Forget "A90 Pro" in your device's Bluetooth settings and re-pair. |
| Only one earbud playing audio | Ensure both earbuds are charged. Place both earbuds back in the case, close, then reopen. If the issue persists, try resetting the earbuds (refer to the manual for specific reset instructions if available). |
| Low volume or poor sound quality | Adjust volume on both your device and the earbuds. Ensure ear tips are correctly sized and sealed in your ear canal. Clean any debris from the earbud speakers. |
| Charging case not charging | Ensure the USB-C cable is securely connected to both the case and the power source. Try a different cable or power adapter. Clean the charging port for any debris. |
Specifications
| Feature | Detail |
|---|---|
| Model Name | A90 PRO |
| Bluetooth Version | 5.4 |
| Bluetooth Range | 15 Meters |
| Audio Driver Size | 14.2 Millimeters (Dynamic Driver) |
| Noise Control | Passive Noise Cancellation, Sound Isolation, Environmental Noise Cancellation (ENC) |
| Battery Life (Earbuds) | 6-8 Hours (single charge) |
| Total Playtime (with Charging Case) | Over 36 Hours |
| Charging Time (Earbuds) | 1.5 Hours |
| Charging Time (Charging Case) | 1.5 Hours |
| Water Resistance Level | IP7 Waterproof |
| Control Method | Touch Control |
| Compatible Devices | Compatible with almost all Bluetooth-enabled devices (e.g., iPhone, Samsung Galaxy, Xiaomi, Huawei, etc.) |
| Included Components | A90 Pro Wireless Earbuds (L/R), Portable charging box, Silicone earplugs (S / M / L), USB-C charging cable, User Manual |
Official Product Videos
Video: An overview of the Btootos Wireless Headphones, highlighting their features and design. This video is provided by the seller, Outcool-US.
Video: A detailed look at the Btootos A90 Pro Wireless Earbuds, showcasing their functionality and user experience. This video is provided by the seller, Outcool-US.
Video: An informational video about Btootos Bluetooth Earphones, covering key aspects and benefits. This video is provided by the seller, Outcool-US.
Video: A presentation of Btootos Bluetooth Headphones, detailing their design and audio capabilities. This video is provided by the seller, Outcool-US.
Safety Information
- Do not expose earbuds or charging case to extreme temperatures, direct sunlight, or fire.
- Avoid using earbuds at high volume for extended periods to prevent hearing damage.
- Keep out of reach of children and pets.
- Do not attempt to disassemble or modify the product.
- Use only the provided charging cable and a certified power adapter.
Warranty and Support
For warranty information or technical support, please refer to the contact details provided with your purchase or visit the official Btootos website. Our customer service team is available to assist you with any questions or issues.
