1. Introduction
Thank you for choosing the Btootos A90 Pro Wireless Earbuds. This manual provides essential information for the safe and efficient use of your device. Please read it thoroughly before operation and retain it for future reference.
2. What's in the Box
- A90 Pro Wireless Earbuds (L/R)
- Portable Charging Box
- Silicone Earplugs (S / M / L) - 3 pairs
- USB-C Charging Cable
- User Manual
3. Product Overview
The Btootos A90 Pro earbuds feature an ergonomic in-ear design for comfort and stability. The charging case includes an LED display to show battery levels.
4. Setup
4.1. Charging the Earbuds and Case
Before first use, ensure both the earbuds and the charging case are fully charged for optimal performance.
- Connect the provided USB-C charging cable to the charging port on the case and a compatible USB power source.
- The LED display on the charging case will show the current charge level. The earbuds will also indicate their charging status.
- A full charge for the earbuds typically takes 1.5 hours. The charging case supports up to 30 hours of usage on a single charge.
4.2. Pairing with Your Device
The earbuds support automatic pairing and are compatible with most Bluetooth-enabled devices.
- Take both earbuds out of the charging case. They will automatically power on and enter pairing mode.
- On your device (phone, tablet, laptop), enable Bluetooth and search for "A90 Pro" in the list of available devices.
- Select "A90 Pro" to connect. Once connected, you will hear a voice prompt "Connected".
- If the earbuds are not connected to your device for more than 5 minutes, they will automatically turn off. To restart, place them back in the case and take them out again.
5. Operating Instructions
5.1. Touch Controls
The A90 Pro earbuds feature intuitive touch controls for easy management of calls and music.
- Play/Pause: Tap once on either earbud.
- Previous Track: Press and hold the left earbud for 2 seconds.
- Next Track: Press and hold the right earbud for 2 seconds.
- Answer Call: Tap once on either earbud.
- Hang Up Call: Press and hold the earbud for 2 seconds.
- Activate Voice Assistant: Triple tap on either earbud.
- Volume Up: Single tap on the right earbud.
- Volume Down: Single tap on the left earbud.
6. Features
6.1. Bluetooth 5.4 Technology
The A90 Pro earbuds utilize advanced Bluetooth 5.4 technology, offering a faster and more stable signal transmission with low latency. Enjoy a reliable connection up to 15 meters, whether at home, in the office, or on the go. Automatic pairing simplifies connection with multiple devices.
6.2. Enhanced ENC Noise Reduction
Equipped with dual 14.2mm low-distortion composite dynamic drivers and AAC&SBC audio coding technology, these headphones deliver clear audio. The ENC (Environmental Noise Cancellation) technology significantly reduces background noise during calls, ensuring your voice is heard clearly.
6.3. Long-Lasting Battery Life
The earbuds provide 6-8 hours of usage on a single charge, and the portable charging case extends this to a total of 30 hours. The Type-C charging port ensures fast and stable recharging, maximizing your listening time.
6.4. IP7 Waterproof Design
With an IP7 waterproof rating and ultra-light nano-coating, these earbuds are resistant to dust and rain. The ergonomic in-ear design and soft silicone ear caps ensure a comfortable and secure fit, ideal for workouts and outdoor activities.
7. Maintenance & Care
- Clean the earbuds and charging case regularly with a soft, dry cloth.
- Avoid exposing the earbuds to extreme temperatures or direct sunlight.
- Store the earbuds in their charging case when not in use to protect them and conserve battery.
- Do not use abrasive cleaners or immerse the earbuds in water, despite their IP7 rating, to prevent damage to internal components.
8. Troubleshooting
| Problem | Solution |
|---|---|
| Earbuds not pairing | Ensure earbuds are charged. Place them back in the case, then take them out to re-enter pairing mode. Check your device's Bluetooth settings to ensure "A90 Pro" is visible and selected. |
| No sound from one earbud | Ensure both earbuds are charged. Try resetting the earbuds by placing them in the case, closing it, and then reopening. Re-pair with your device. |
| Charging case not charging | Check the USB-C cable and power adapter. Ensure they are properly connected and functional. Try a different cable or power source. |
| Poor call quality | Ensure the earbuds are properly seated in your ears. Move closer to your connected device to reduce interference. |
9. Specifications
- Model Name: A90 Pro
- Bluetooth Version: 5.4
- Bluetooth Range: 15 Meters
- Audio Driver Size: 14.2 Millimeters
- Battery Life (Earbuds): 6-8 Hours
- Battery Life (with Charging Case): Up to 30 Hours
- Charging Port: Type-C
- Water Resistance Level: IP7 Waterproof
- Noise Control: Passive Noise Cancellation, Sound Isolation (ENC for calls)
- Control Type: Touch Control
- Material: Silicone
- Item Weight: 0.09 Kilograms (approx. 3.17 ounces)
10. Warranty and Support
For warranty information or technical support, please refer to the documentation included in your product packaging or visit the official Btootos website. Keep your purchase receipt for any warranty claims.
