Introduction
Welcome to the user manual for your new Original F9 TWS Earphones. These wireless earbuds offer a superior audio experience with convenient features designed for your active lifestyle. This manual provides essential information on setup, operation, maintenance, and troubleshooting to ensure you get the most out of your device.
What's in the Box
Please check the package contents to ensure all items are present:
- Original F9 TWS Earphones (Left and Right)
- Recharging Carrying Case
- USB Charging Cable
- Ear Cushions (various sizes)
- User Manual (this document)
Specifications
| Feature | Description |
|---|---|
| Model Name | V5.0+EDR Wireless Earphone |
| Connectivity Technology | Bluetooth |
| Wireless Communication Technology | Bluetooth |
| Bluetooth Version | 5.0 |
| Bluetooth Range | 10 Meters |
| Control Method | Touch |
| Battery Life (Earbuds) | 4 Hours |
| Special Features | Recharging Carrying Case, Emergency Power Bank Function |
| Water Resistance Level | Water Resistant |
| Material | Plastic |
| Color | Blue |
| Item Weight | 3.2 ounces |
| Package Dimensions | 4.33 x 3.5 x 2.01 inches |
| Manufacturer | Guangzhou YIXI Technology Co., Ltd |
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. Connect the USB charging cable to the case and a power source. The LED display on the case will show the charging progress for both the case and individual earbuds. A full charge is indicated by 100% on the display.

The digital power display clearly indicates the charging status. The left earbud's charging progress is shown on the left, and the charging case's remaining battery is on the right. This allows you to monitor power levels at a glance.
2. Pairing with Your Device
- Power On: Take both earbuds out of the charging case. They will automatically power on and enter pairing mode (indicated by flashing LED lights).
- Activate Bluetooth: On your smartphone or other Bluetooth-enabled device, go to the Bluetooth settings and turn Bluetooth on.
- Select Device: Look for "F9" or "F9 TWS" in the list of available devices and select it to connect.
- Confirmation: Once successfully paired, the earbud's LED lights will stop flashing, and you may hear a voice prompt confirming the connection.
Note: The earbuds will automatically reconnect to the last paired device when taken out of the case, if Bluetooth is enabled on the device.
Operating Instructions
Basic Functions (Touch Control)
- Power On: Take earbuds out of the charging case.
- Power Off: Place earbuds back into the charging case.
- Play/Pause: Single tap on either earbud.
- Next Track: Double tap the Right earbud.
- Previous Track: Double tap the Left earbud.
- Answer/End Call: Single tap on either earbud during an incoming call.
- Reject Call: Press and hold on either earbud for 2 seconds during an incoming call.
- Activate Voice Assistant: Triple tap on either earbud.
Emergency Power Bank Function

The charging case features a 1500 mAh emergency power bank. You can use the USB output port on the case to charge your mobile phone or other small electronic devices in an emergency. Simply connect your device's charging cable to the USB port on the charging case.
Maintenance
Cleaning
Regular cleaning helps maintain the performance and longevity of your earbuds:
- Use a soft, dry, lint-free cloth to wipe the earbuds and charging case.
- Gently clean the charging contacts on both the earbuds and the case with a cotton swab.
- Remove ear tips and clean them with mild soap and water, then dry thoroughly before reattaching.
- Avoid using harsh chemicals, cleaning solvents, or strong detergents.
Storage

Always store the earbuds in their magnetic closing charging case when not in use. This protects them from dust, scratches, and accidental damage. The magnetic cover ensures the earbuds are securely held in place.

The soft silicone dust plug integrated into the design helps protect the charging port and internal components from dust and debris, extending the product's service life and maintaining its appearance.
Water Resistance
The F9 TWS Earphones are water resistant, offering protection against moisture and light splashes. However, they are not fully waterproof and should not be submerged in water. Avoid exposing them to heavy rain, showering, or swimming.
Troubleshooting
If you encounter any issues with your F9 TWS Earphones, please refer to the following common solutions:
- Earbuds not pairing with each other: Place both earbuds back into the charging case, close the lid, wait a few seconds, then take them out again. They should automatically pair with each other.
- Earbuds not connecting to device: Ensure Bluetooth is enabled on your device. Forget the "F9" device from your Bluetooth list and try pairing again. Make sure the earbuds are charged.
- No sound from one earbud: Try placing both earbuds back in the case and taking them out again. If the issue persists, try resetting the earbuds (refer to specific reset instructions if available, or try a factory reset by holding the touch control for an extended period while in the case).
- Charging issues: Ensure the charging cable is securely connected to both the case and the power source. Check if the charging contacts on the earbuds and case are clean and free of debris.
- Low volume or poor sound quality: Adjust the volume on your connected device. Ensure the ear tips are the correct size for a snug fit in your ears. Clean any earwax buildup from the earbud nozzles.
If the problem persists after trying these steps, please contact customer support.
Official Product Video
Watch the official product video for a visual guide on the F9 TWS Wireless Earphones:
This video provides an overview of the F9 TWS Wireless Earphones, highlighting key features such as Bluetooth 5.0 connectivity, HiFi stereo sound, rechargeable carrying case, and compact design. It also showcases the magnetic closing case and water-resistant properties, along with device compatibility and dimensions.
Warranty and Support
Your Original F9 TWS Earphones come with a standard manufacturer's warranty against defects in materials and workmanship. Please retain your proof of purchase for warranty claims.
For technical support, warranty inquiries, or further assistance, please refer to the contact information provided with your product packaging or visit the official Generic brand support website.