Introduction
Thank you for choosing the Vieta VM-BS39BL Portable Wireless Bluetooth Speaker. This manual provides essential information for setting up, operating, and maintaining your device. The VM-BS39BL is a versatile portable speaker featuring Bluetooth 4.1 connectivity, FM Radio, USB playback, and a 3.5mm auxiliary input. Its robust design includes IPX6 water resistance, making it suitable for various environments. Please read this manual thoroughly before use to ensure optimal performance and longevity of your speaker.

Image: Vieta VM-BS39BL Portable Wireless Bluetooth Speaker. This image displays the speaker in its blue color, with an angled view highlighting the control panel and the speaker grille.
Package Contents
Ensure all items are present in the package:
- 1 x Vieta VM-BS39BL Portable Wireless Bluetooth Speaker
- User Manual (this document)
- Charging Cable
- Auxiliary Cable
Product Overview and Controls
Familiarize yourself with the speaker's layout and controls:

Image: Detailed diagram of the Vieta VM-BS39BL speaker, indicating the location and function of each button and port. This includes the power button, Bluetooth/call button, play/pause, volume/track controls, TWS button, USB port, auxiliary input, and Micro SD slot.
Control Panel Functions:
- Power Button (①): Press and hold to turn the speaker On/Off. Short press to switch between Bluetooth, FM Radio, and USB Player modes.
- Bluetooth / Call Button (②): Press to enter Bluetooth pairing mode. During a call, press to answer/end a call. Press and hold to reject a call.
- Play / Pause Button (③): Press to play or pause audio. In FM mode, press and hold to auto-scan and save stations.
- Volume Up / Next Track Button (④): Short press to increase volume. Long press to skip to the next track/station.
- Volume Down / Previous Track Button (⑤): Short press to decrease volume. Long press to go to the previous track/station.
- TWS Button (⑥): Press to activate True Wireless Stereo pairing with another VM-BS39BL speaker.
- Battery Indicator Lights: Displays current battery level.
Ports:
- USB Player / USB Charger Port: For playing audio from a USB drive and charging the speaker.
- Auxiliary Input (3.5mm): For connecting external audio devices via a 3.5mm audio cable.
- Micro SD Slot: For playing audio from a Micro SD card.
Setup
Charging the Speaker:
Before first use, fully charge the speaker. Connect the provided USB charging cable to the speaker's USB port and the other end to a compatible USB power adapter (e.g., 5V/1A) or a computer's USB port. The battery indicator lights will show charging status and turn off or change color when fully charged.
Powering On/Off:
Press and hold the Power Button (①) for approximately 3 seconds to turn the speaker on or off. A sound prompt will indicate the power status.
Operating Instructions
Bluetooth Pairing:
- Turn on the speaker. It will automatically enter Bluetooth pairing mode, indicated by a flashing blue LED light.
- On your mobile device (smartphone, tablet, etc.), enable Bluetooth and search for available devices.
- Select "VM-BS39BL" from the list of devices.
- Once paired, the LED light will stop flashing and remain solid blue, and you will hear a confirmation sound.
- The speaker will automatically reconnect to the last paired device when turned on, if the device is within range and Bluetooth is enabled.
FM Radio Mode:
- Turn on the speaker and short press the Power Button (①) to switch to FM Radio mode.
- Press and hold the Play / Pause Button (③) to initiate an automatic scan for FM stations. The speaker will save all found stations.
- Use the Volume Up / Next Track Button (④) and Volume Down / Previous Track Button (⑤) to navigate between saved stations.
USB Player Mode:
Insert a USB flash drive containing MP3 audio files into the USB Player port. The speaker will automatically switch to USB mode and begin playing the first track. Use the Volume Up / Next Track Button (④) and Volume Down / Previous Track Button (⑤) for track navigation.
Auxiliary Input Mode:
Connect an external audio device (e.g., MP3 player, computer) to the speaker's 3.5mm auxiliary input using an audio cable. The speaker will automatically switch to AUX mode. Control playback from your connected device.
Making and Receiving Calls (Voice Call):
- When a call comes in, press the Bluetooth / Call Button (②) to answer the call.
- To end a call, press the Bluetooth / Call Button (②) again.
- To reject an incoming call, press and hold the Bluetooth / Call Button (②).
True Wireless Stereo (TWS) Function:
The TWS function allows you to pair two VM-BS39BL speakers together for a stereo sound experience.
- Ensure both VM-BS39BL speakers are turned on and not connected to any Bluetooth device.
- On one of the speakers, press the TWS Button (⑥). It will enter TWS pairing mode.
- The speakers will automatically connect to each other. A confirmation sound will indicate successful TWS pairing.
- Once paired via TWS, connect your mobile device to one of the speakers via Bluetooth as described in the "Bluetooth Pairing" section. Audio will now play through both speakers in stereo.

Image: Illustration of the Dual Pair (TWS) feature, showing two Vieta speakers wirelessly connected to provide a stereo audio experience.
Maintenance
Cleaning:
Wipe the speaker with a soft, dry cloth. Do not use abrasive cleaners, alcohol, or chemical solvents, as these may damage the surface. Ensure all ports are dry before use, especially after exposure to water.
Water Resistance (IPX6):
The VM-BS39BL speaker is IPX6 water-resistant, meaning it can withstand powerful water jets. It is not designed for submersion in water. Ensure the port cover is securely closed before exposing the speaker to water to maintain its water resistance rating.
Battery Care:
To prolong battery life, avoid fully discharging the speaker frequently. Charge the speaker regularly, even if not in use for extended periods (e.g., once every 3 months). Store the speaker in a cool, dry place away from extreme temperatures.
Troubleshooting
If you encounter issues with your VM-BS39BL speaker, please refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Speaker does not turn on. | Low battery; Power button not pressed long enough. | Charge the speaker fully. Press and hold the Power button for 3 seconds. |
| Cannot pair via Bluetooth. | Speaker not in pairing mode; Device Bluetooth off; Speaker too far from device. | Ensure speaker is in pairing mode (flashing blue LED). Turn on Bluetooth on your device. Move speaker closer to device (within 10 meters). |
| No sound. | Volume too low; Incorrect input mode; Device not playing audio. | Increase speaker and device volume. Ensure correct mode (Bluetooth, FM, USB, AUX) is selected. Check if audio is playing on the source device. |
| FM Radio reception is poor or volume fluctuates. | Weak signal; Interference. | Relocate the speaker to an area with better reception. Re-scan for stations. |
| Power/Mode button unresponsive or erratic. | Temporary software glitch; Physical issue. | Try restarting the speaker. If the issue persists, contact customer support. |
Specifications
| Feature | Detail |
|---|---|
| Model Number | VM-BS39BL |
| Brand | Vieta Pro |
| Connectivity Technology | Bluetooth |
| Bluetooth Version | 4.1 |
| Water Resistance Rating | IPX6 |
| Max Speaker Output Power | 25 Watts |
| Battery Type | Lithium-ion (Rechargeable) |
| Impedance | 4 ohms |
| Compatible Devices | iPhone, iPod, iPad, Smartphones, Tablets, MP4 Player, and many more Bluetooth-enabled devices. |
| Recommended Uses | For smartphone or tablet |
| Included Components | 1 speaker |
| Finish Type | Matte |
| Color | Blue |
Warranty and Support
The Vieta VM-BS39BL speaker comes with a standard manufacturer's warranty. Please refer to the warranty card included in your package for specific terms and conditions, including warranty period and coverage details. For technical support, service, or warranty claims, please contact Vieta Pro customer service through their official website or the contact information provided with your purchase documentation.
Information regarding spare parts availability and software updates is not available at this time.