1. Introduction
The FIIL Key Pro Wireless ANC Earbuds are designed to provide a high-quality audio experience with advanced features. These earbuds incorporate 40dB Active Noise Cancellation, Bluetooth 5.4 for stable and efficient connectivity, and a unique dual-wearing mode for enhanced comfort and sound immersion. This manual provides comprehensive instructions for optimal use and maintenance of your FIIL Key Pro earbuds.
Image 1.1: FIIL Key Pro Earbuds and Charging Case.
2. Package Contents
Verify that all items are present in the package:
- FIIL Key Pro Wireless ANC Earbuds (Left and Right)
- Charging Case
- USB-C Charging Cable
- Eartips (various sizes)
- User Manual (this document)
3. Setup
3.1 Initial Charging
Before first use, fully charge the earbuds and the charging case. Place the earbuds into the charging case and connect the USB-C cable to the case and a power source. The charging case can be fully charged in approximately 1.5 hours.
3.2 Wearing Modes
The FIIL Key Pro earbuds feature a patented design allowing for a free switch between in-ear and half-in-ear wearing modes. Select the appropriate eartips for your preferred mode and comfort.
- In-ear mode: Provides a secure fit and optimal seal for active noise cancellation and immersive audio.
- Half-in-ear mode: Offers a more comfortable and open fit, suitable for situations where environmental awareness is desired.
Image 3.1: Illustration of the patented switchable wearing modes for FIIL Key Pro earbuds.
3.3 Bluetooth Pairing
- Open the charging case. The earbuds will automatically enter pairing mode.
- On your device (smartphone, tablet, computer), navigate to the Bluetooth settings.
- Select "FIIL Key Pro" from the list of available devices.
- Once connected, a confirmation sound will play, and the earbuds will be ready for use.
3.4 FIIL+ App Installation
For advanced features and customization, download the FIIL+ app from your device's app store. The app allows for customizable EQ settings, noise control adjustments, and other personalized options.
Image 3.2: The FIIL+ app interface for customizing sound and settings.
4. Operation
4.1 Active Noise Cancellation (ANC) and MAF Noise Tuning
The FIIL Key Pro earbuds feature 40dB dual-feed hybrid ANC. This system, combined with the patented MAF (My Audio Filter) intelligent noise adjustment, allows for precise noise cancellation tailored to different environments. You can switch between ANC modes via the touch controls or the FIIL+ app.
Image 4.1: Illustration of 40dB dual-feed hybrid ANC in action.
4.2 Call Features
For clear communication, the earbuds utilize a dual-mic A.I. algorithm that reduces over 95% of environmental noise. Additionally, the physical wind convection conduit design, based on the "Coanda Effect," further reduces wind noise by up to 7.5dB, ensuring your voice is transmitted clearly during calls.
Image 4.2: Visual representation of call noise cancellation technology.
4.3 Touch Controls
The earbuds feature intuitive touch controls for managing playback, calls, and noise control modes. Refer to the FIIL+ app or the quick start guide for specific touch gestures and their functions.
4.4 Multipoint Connection
Equipped with a Bluetooth 5.4 chip, the FIIL Key Pro supports simultaneous connection to two devices. This allows for seamless switching between audio sources, such as a smartphone and a laptop, with a single click.
Image 4.3: Bluetooth 5.4 technology enabling multipoint connection.
4.5 Battery Management
The earbuds offer approximately 6.5 hours of listening time on a single charge without ANC, and 4.5 hours with ANC activated. The charging case provides an additional 4 full charges, extending the total battery life to over 30 hours.
Image 4.4: Battery life overview for FIIL Key Pro earbuds.
5. Maintenance
5.1 Cleaning
Regularly clean your earbuds and charging case to ensure optimal performance and hygiene. Use a soft, dry, lint-free cloth. For eartips, remove them and gently wipe with a damp cloth, then allow them to dry completely before reattaching. Avoid using abrasive materials or harsh chemicals.
5.2 Water Resistance
The FIIL Key Pro earbuds are IPX5 water-resistant, meaning they are protected against low-pressure water jets from any direction. This makes them suitable for workouts and light rain. However, they are not designed for submersion in water. Avoid exposing the charging case to water.
Image 5.1: FIIL Key Pro earbuds are designed to be splash-proof.
5.3 Storage
When not in use, store the earbuds in their charging case to protect them from dust, damage, and to keep them charged. Store the case in a cool, dry place away from direct sunlight and extreme temperatures.
6. Troubleshooting
If you encounter issues with your FIIL Key Pro earbuds, refer to the following common solutions:
- No Sound: Ensure earbuds are charged, properly paired, and the volume on both the earbuds and your device is turned up.
- Pairing Issues: Turn off Bluetooth on your device, then turn it back on. Place earbuds back in the case, close, then reopen to re-enter pairing mode. Try pairing with another device to isolate the issue.
- Earbuds Not Charging: Check the USB-C cable and power adapter. Ensure the charging contacts on the earbuds and inside the case are clean and free of debris.
- ANC Not Effective: Ensure earbuds are properly seated in your ears with a good seal. Try different sized eartips.
- One Earbud Not Working: Place both earbuds back in the case, close it for a few seconds, then reopen. Re-pair the earbuds with your device.
For more detailed troubleshooting or persistent issues, consult the FIIL+ app or the official FIIL support resources.
7. Specifications
| Feature | Detail |
|---|---|
| Model Name | Key Pro |
| Connectivity Technology | Wireless (Bluetooth 5.4) |
| Noise Control | Active Noise Cancellation (40dB Hybrid ANC) |
| Audio Driver Type | Dynamic Driver (10.1mm Wool Basin Composite Unit) |
| Battery Life (Earbuds) | Up to 6.5 hours (ANC Off), 4.5 hours (ANC On) |
| Total Battery Life (with Case) | Over 30 hours |
| Charging Time (Case) | Approx. 1.5 hours |
| Water Resistance Level | IPX5 |
| Bluetooth Range | 10 Meters |
| Control Method | App, Touch |
| Special Features | Lightweight, Microphone Included, Multipoint Pairing, Patented Switchable Wearing Modes |
| Item Weight | 3.84 ounces |
| Included Components | Charging Case, Eartips, USB-C Cable, User Manual |
Image 7.1: Overview of key features and specifications.
8. Official Product Video
Video 8.1: Official product overview of the FIIL Key Pro earbuds, highlighting key features and design. This video is provided by FIIL Official.
9. Warranty Information
For detailed warranty information regarding your FIIL Key Pro Wireless ANC Earbuds, please refer to the warranty card included in your product packaging or visit the official FIIL website. Warranty terms and conditions may vary by region and retailer.
10. Customer Support
If you require further assistance, technical support, or have questions not covered in this manual, please contact FIIL customer support through their official website or the FIIL+ app. You can also visit the FIIL Official Store on Amazon for additional product information and support resources.
