1. Introduction
Thank you for purchasing the VBESTLIFE D6443-01 Cycling Bluetooth Speaker. This portable wireless speaker is designed for outdoor enthusiasts, offering robust features like water resistance, memory card support, FM radio, and a convenient bike bracket. This manual provides essential information for safe and effective use of your speaker.
2. Safety Information
Important Safety Information: Read all instructions before use. Failure to follow these instructions may result in damage to the product or personal injury.
- WARNING: Keep the device and its cord out of reach of children under 3 years old.
- ATTENTION: Not suitable for children under 36 months.
- ATTENTION: Only for domestic use.
- ATTENTION: Protective equipment should be worn. Not to be used in traffic.
- WARNING: Keep out of reach of children. In case of ingestion, seek medical attention immediately.
- WARNING: Please mind potential fire risk and strictly follow the instruction manual for charging and storage. For disposal, please check your local authority's website for more information and dispose of the lithium-ion battery safely in accordance with the applicable legal requirements.
- Keep away from children unless supervised by an adult.
- Do not use this product for purposes other than its intended use.
- Inspect the product before each use; do not use if damaged.
- Follow installation and operation guidelines to avoid injury.
- Do not expose to water or moisture beyond its water-resistant capabilities.
- Handle with care to avoid cuts or injuries.
3. Product Overview
3.1. Package Contents
Ensure all items are present in the package:
- 1 x Bluetooth Speaker
- 1 x Charging Cable (USB)
- 1 x Connection Cable (AUX)
- 1 x Instruction Manual (this document)
- 1 x Fastening Ring (Bike Bracket)
Note: Memory card is not included.
3.2. Speaker Components

Figure 1: Speaker Front View with Controls
The speaker features intuitive controls and ports:
- Control Buttons: Located on the top surface.
- '-' Button: Decrease volume / Previous track.
- Power Button (⏻): Power On/Off / Play/Pause.
- 'M' Button: Mode switch (Bluetooth, FM Radio, Memory Card).
- '+' Button: Increase volume / Next track.
- Ports: Located on the side, protected by a rubber flap.
- USB-C Port: For charging the speaker.
- USB-A Port: For connecting USB storage devices (if supported).
- AUX Port: For wired audio connection using the provided connection cable.

Figure 2: Speaker Ports (USB-C, USB-A)
3.3. Bike Bracket
The included fastening ring (bike bracket) allows for secure mounting of the speaker to bicycle handlebars or similar structures.

Figure 3: Bike Bracket

Figure 4: Speaker Rear with Clip
4. Setup
4.1. Charging the Speaker
- Open the rubber flap on the side of the speaker to expose the charging port.
- Connect the provided USB charging cable to the USB-C port on the speaker.
- Connect the other end of the USB cable to a compatible USB power adapter (not included) or a computer's USB port.
- The charging indicator (if present) will illuminate, typically red, during charging and turn off or change color when fully charged.
- Ensure the rubber flap is securely closed after charging to maintain water resistance.
4.2. Mounting the Speaker with Bike Bracket
- Attach the bike bracket to your bicycle handlebars or a similar cylindrical bar. Tighten the screw until the bracket is secure.
- Align the clip on the back of the speaker with the slot on the bike bracket.
- Slide the speaker down into the bracket until it clicks securely into place.
- Ensure the speaker is firmly attached before cycling.

Figure 5: Speaker Mounted on Bike
5. Operation
5.1. Power On/Off
- To Power On: Press and hold the Power button (⏻) for a few seconds until you hear an audible prompt or see an indicator light.
- To Power Off: Press and hold the Power button (⏻) again for a few seconds until you hear an audible prompt or the indicator light turns off.
5.2. Bluetooth Pairing
- Ensure the speaker is powered on and in Bluetooth mode (indicated by a flashing blue light, or an audible prompt). If not, press the 'M' button to switch to Bluetooth mode.
- On your mobile phone, tablet, or other Bluetooth device, enable Bluetooth and search for available devices.
- Select 'D6443-01' (or similar name) from the list of devices.
- Once paired, the speaker will provide an audible confirmation, and the indicator light will typically stop flashing and remain solid blue.
5.3. Playing Music from Memory Card (TF Card)
- With the speaker powered on, insert a compatible memory card (TF card) into the designated slot (under the rubber flap).
- The speaker should automatically switch to memory card mode and begin playing audio. If not, press the 'M' button to cycle through modes until memory card mode is activated.
5.4. FM Radio Mode
- With the speaker powered on, press the 'M' button repeatedly until FM Radio mode is activated.
- In FM Radio mode, press the Power button (⏻) once to auto-scan and save available radio stations.
- Use the '+' and '-' buttons to navigate between saved stations.
5.5. Serial Connection (TWS Function)
The speaker supports connecting two D6443-01 speakers for a stereo sound experience:
- Ensure both speakers are powered on and not connected to any Bluetooth device.
- On one speaker, press and hold the 'M' button until you hear a pairing tone, indicating it's searching for another speaker.
- The two speakers will automatically connect to each other. Once connected, you will hear a confirmation tone.
- Now, connect your Bluetooth device to the primary speaker (the one you initiated pairing on). Both speakers will play audio in stereo.
5.6. Controlling Playback
- Play/Pause: Press the Power button (⏻) once.
- Volume Up: Press the '+' button.
- Volume Down: Press the '-' button.
- Next Track/Station: Press and hold the '+' button.
- Previous Track/Station: Press and hold the '-' button.
6. Maintenance
- Cleaning: Wipe the speaker with a soft, damp cloth. Do not use harsh chemicals or abrasive cleaners.
- Water Exposure: While water-resistant, avoid submerging the speaker in water. Ensure all port flaps are securely closed when exposed to moisture.
- Storage: Store the speaker in a cool, dry place away from direct sunlight and extreme temperatures.
- Battery Care: To prolong battery life, avoid fully discharging the battery frequently. Charge the speaker regularly, even if not in use for extended periods.
7. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Speaker does not power on | Low battery | Charge the speaker fully. |
| Cannot pair via Bluetooth | Speaker not in pairing mode / Device Bluetooth off / Too far apart | Ensure speaker is in Bluetooth mode (flashing blue light). Turn on Bluetooth on your device. Move devices closer. Forget previous pairings on your device and try again. |
| No sound | Volume too low / Incorrect mode / Device not playing | Increase speaker and device volume. Press 'M' to switch modes. Ensure audio is playing on your connected device. |
| FM Radio not working | Poor signal / No stations scanned | Move to an area with better signal. Perform an auto-scan for stations (press Power button in FM mode). |
| Memory card not recognized | Card inserted incorrectly / Unsupported format / Corrupted card | Reinsert the memory card. Ensure it's formatted correctly (e.g., FAT32). Try a different memory card. |
8. Specifications
| Feature | Specification |
|---|---|
| Product Name | Cycling Bluetooth Speaker |
| Model | D6443-01 |
| Brand Name | VBESTLIFE |
| Material | ABS Plastic |
| Speaker Type | Portable |
| Audio Crossover | Full-Range |
| Number of Loudspeaker Enclosure | 1 |
| Channels | 2 (2.0) |
| Input/Output | Coaxial (for wired connection) |
| Sound Mode | Hi-Res Sound Mode |
| Input Power (W) | 200-299W |
| Battery | Built-in Lithium Battery (Model: 503040, Capacity: 500mAh) |
| Charging | USB (AC adapter not included) |
| Wireless Connectivity | Bluetooth |
| Water Resistance | Water-resistant (suitable for outdoor use and rain) |
| Voice Control | Yes |
| Support APP | Yes |
| Inbox Adaptor | No |
| Origin | Mainland China |
9. User Tips
- Secure Mounting: Always ensure the bike bracket is tightly secured to your handlebars and the speaker is firmly clipped into the bracket before starting your ride to prevent accidental detachment.
- Optimal Sound: For the best audio experience, especially when using the serial connection (TWS) feature, place the two speakers within close proximity and unobstructed by large objects.
- Battery Life: To maximize battery life during long rides, consider carrying a portable power bank to recharge the speaker via its USB-C port.
10. Warranty & Support
10.1. Manufacturer Information
Manufacturer: Shenzhen Huoxiang Industrial Co., Ltd
Address: 102, Building 10, Fuzhong Industrial Park, Huide Community, Fuyong Street, Bao'an District, Shenzhen, Guangdong, China
Email: rhik2tknhr7@gmail.com
10.2. EU Authorized Representative
Representative: Kequ Technology s.r.o.
Address: Pražákova 1008/69, Štýřice, 63900 Brno, Jihomoravský kraj, Czech Republic
Email: christopher25106@outlook.com
10.3. Compliance Information
This product complies with the following directives:
- Directive 2001/95/EC (General Product Safety)
- Machinery Directive 2006/42/EC
- Toy Safety Directive 2009/48/EC
- Directive 2014/35/EU (Low Voltage)
- Directive 2014/30/EU (Electromagnetic Compatibility)
- (EU) 2016/425 (Personal Protective Equipment)
- Directive 2014/53/EU (Radio Equipment)

CE Mark
10.4. Customer Support
For technical assistance, warranty claims, or further inquiries, please contact the manufacturer or your point of purchase. Please have your model number (D6443-01) and batch/serial number ready when contacting support.
Please note that warranty terms and conditions may vary based on region and retailer. Refer to your purchase documentation for specific details.