Introduction
Thank you for choosing Bowost Wireless Bluetooth Earbuds, Model F3J. These earbuds are designed to provide a superior audio experience with advanced features such as Bluetooth 5.1 connectivity, IP7 waterproofing, and intuitive touch controls. This manual will guide you through the setup, operation, and maintenance of your new earbuds to ensure optimal performance and longevity.
Product Overview
Package Contents
Before you begin, please ensure all items are present in the package:
- Bowost Wireless Bluetooth Earbuds (Left and Right)
- Charging Case
- USB Type-C Charging Cable
- Multiple Sizes of Ear Tips (Small, Medium, Large)
- User Manual

Image: All components included in the Bowost Wireless Bluetooth Earbuds package.
Key Features
- Superior Sound Quality: Equipped with 10mm professional speaker units and composite vibration diaphragms for crisp highs, rich mids, and powerful deep bass.
- Advanced Bluetooth 5.1: Ensures faster, more stable signal transmission with low latency for an uninterrupted listening experience.
- IP7 Waterproof Rating: Designed with high-quality waterproof materials and multi-process sealing, effectively protecting internal components from water, rain, and sweat.
- Extended Battery Life: Up to 6 hours of playback on a single charge, with the charging case providing an additional 40 hours of battery life.
- Convenient Type-C Fast Charging: A quick 10-minute charge provides 1 hour of playback.
- Intuitive Touch Control: Manage music playback, calls, and voice assistant activation with simple taps on the earbuds.
- LED Battery Display: The charging case features an LED indicator to show the battery level of both the case and the earbuds.
- Ergonomic Design: 120° ergonomic fit ensures comfort and stability, ideal for various activities including sports.

Image: The Bowost Wireless Bluetooth Earbuds with their charging case, highlighting the compact design.

Image: Visual summary of the main features of the Bowost Wireless Earbuds.

Image: Illustration of the ergonomic design and included ear tip sizes for a comfortable fit.
Setup
Charging the Earbuds and Case
For first-time use, fully charge the earbuds and the charging case. The charging case features an LED digital display that shows the battery percentage of the case and individual charging status of the earbuds.
- Place the earbuds into the charging case. Ensure they are correctly seated; the earbuds will light up to indicate charging.
- Connect the USB Type-C charging cable to the charging port on the case and the other end to a USB power source (e.g., wall adapter, computer USB port).
- The LED display on the charging case will show the current battery level and charging progress.
- Once fully charged, disconnect the charging cable.

Image: Battery life indication for the earbuds and charging case.
Pairing with Your Device (One-Step Pairing)
The earbuds feature automatic pairing for convenience.
- Ensure your device's Bluetooth is turned on.
- Open the charging case and remove both earbuds. They will automatically power on and enter pairing mode.
- On your device, search for Bluetooth devices and select "F3J" from the list.
- Once connected, you will hear a confirmation tone, and the earbuds will be ready for use.
- After the initial pairing, the earbuds will automatically connect to the last paired device when removed from the case.

Image: The one-step pairing process shown with a smartphone's Bluetooth settings.

Image: Visual representation of the automatic pairing sequence.
Operating Instructions
The Bowost earbuds feature intuitive touch controls for easy management of audio and calls.
Touch Control Functions
| Action | Left Earbud | Right Earbud |
|---|---|---|
| Play/Pause Music | Single Tap | Single Tap |
| Next Track | N/A | Double Tap |
| Previous Track | Double Tap | N/A |
| Volume Up | N/A | Triple Tap |
| Volume Down | Triple Tap | N/A |
| Answer/End Call | Single Tap | Single Tap |
| Reject Call | Long Press (2s) | Long Press (2s) |
| Activate Voice Assistant (Siri/Google Assistant) | Long Press (3s) | Long Press (3s) |
| Power On/Off | Long Press (5s) | Long Press (5s) |

Image: Visual guide to the smart touch control functions.

Image: Detailed view of the touch control area on the earbud.
Maintenance
Water Resistance (IP7 Rating)
The earbuds are rated IP7 waterproof, meaning they can withstand immersion in water up to 1 meter for 30 minutes. This makes them suitable for workouts, running in light rain, and other activities where they might be exposed to sweat or splashes. However, they are not designed for swimming or prolonged submersion.
- Do not expose the charging case to water, as it is not waterproof.
- After exposure to water or sweat, ensure the earbuds are completely dry before placing them back into the charging case to prevent damage to the charging contacts.

Image: The earbuds demonstrating their IPX7 waterproof capability.

Image: Close-up of the earbuds showing water resistance.
Cleaning and Storage
- Regularly clean the earbuds and charging case with a soft, dry, lint-free cloth.
- Remove ear tips and clean them with mild soap and water, then dry thoroughly before reattaching.
- Use a cotton swab or a small, soft brush to gently clean the charging contacts on both the earbuds and inside the case.
- Store the earbuds in their charging case when not in use to protect them and keep them charged.
- Avoid extreme temperatures and direct sunlight.
Troubleshooting
If you encounter any issues with your Bowost Wireless Bluetooth Earbuds, please refer to the following common solutions:
Earbuds Not Pairing or Connecting
- Check Battery: Ensure both earbuds and the charging case have sufficient battery charge.
- Re-pair:
- Turn off Bluetooth on your device.
- Place both earbuds back into the charging case, close the lid, and wait a few seconds.
- Remove the earbuds from the case.
- Turn on Bluetooth on your device and search for "F3J" to reconnect.
- Clear Bluetooth History: On your device, forget or unpair "F3J" from your Bluetooth device list, then repeat the pairing process.
- Distance: Ensure the earbuds are within the effective Bluetooth range (typically 10 meters) of your device.
Only One Earbud Working
- Check Battery: Ensure both earbuds are charged.
- Reset Earbuds: Place both earbuds back into the charging case. Close the lid, then open it again. This often resets the connection between the two earbuds.
- Clean Contacts: Clean the charging contacts on both earbuds and inside the case to ensure proper connection and charging.
Low Volume or Poor Sound Quality
- Adjust Volume: Increase the volume on both your device and using the earbud touch controls.
- Ear Tip Fit: Ensure you are using the correct size ear tips for a secure and comfortable seal in your ear canal. A poor seal can significantly affect sound quality and bass.
- Clean Earbuds: Check for any earwax or debris blocking the earbud nozzles and clean them gently.
- Interference: Move away from other electronic devices that might cause wireless interference.

Image: Highlighting the deep bass and Hi-Fi stereo sound quality.

Image: Visual representation of the Hi-Fi stereo sound quality.
Specifications
| Feature | Detail |
|---|---|
| Model Number | F3J |
| Brand | Bowost |
| Connectivity | Bluetooth 5.1 (Wireless) |
| Earbud Type | In-Ear (Intra-aural) |
| Water Resistance | IP7 Waterproof |
| Single Charge Playtime | Up to 6 hours |
| Total Playtime (with Case) | Up to 40 hours |
| Charging Port | USB Type-C |
| Control Type | Touch Control (Volume, Track, Calls, Voice Assistant) |
| Microphone | Built-in (Bi-directional) |
| Battery Type | Lithium-ion (Rechargeable) |
| Weight | Approximately 4 Grams (per earbud) |
| Material | Plastic |
| Compatible Devices | Bluetooth-enabled mobile phones, tablets, laptops (iOS, Android, etc.) |
Warranty and Support
Bowost provides the following support for your product:
- 30-Day Full Refund: If you are not satisfied with your purchase, you may be eligible for a full refund within 30 days.
- 24-Month Repair Warranty: The product is covered by a 24-month warranty for repairs against manufacturing defects.
- 24-Hour Quick Response: For any inquiries or support needs, expect a quick response within 24 hours.
Please retain your proof of purchase for warranty claims. For further assistance, refer to the contact information provided with your product packaging or visit the official Bowost support website.