1. Introduction
Thank you for choosing the JUOVI J6311 Bluetooth Speaker. This manual provides essential information for setting up, operating, and maintaining your speaker. Please read it thoroughly before use to ensure optimal performance and longevity of your device.
2. Package Contents
- JUOVI SOUND J1 Bluetooth Speaker (Model J6311)
- USB-C Charging Cable
- User Manual
- Lanyard
- 3.5mm Line-in Audio Cable
3. Product Overview
3.1 Speaker Components
The JUOVI J6311 speaker features dual 50mm drivers for powerful 20W stereo sound. The robust design ensures durability and high-quality audio output.

Figure 1: Internal view of the speaker's dual 50mm drivers, illustrating the 20W sound output.
3.2 Control Buttons
The top panel of the speaker includes tactile buttons for easy control of various functions:
- Power Button: Long press to power on/off.
- Mode Button (M): Short press to switch between Bluetooth, AUX, and TF Card modes.
- Play/Pause Button: Play or pause audio. Answer/end calls.
- Volume Up (+): Increase volume. Long press for next track.
- Volume Down (-): Decrease volume. Long press for previous track.
- TWS Button: Initiate True Wireless Stereo pairing.

Figure 2: Top-mounted controls for volume, mode, and other functions.
3.3 Ports and Connections
The rear of the speaker features a protective rubber flap covering the connectivity ports:
- USB-C Charging Port (IN): For charging the speaker.
- USB-A Power Bank Port (OUT): To charge external devices.
- Micro SD Card Slot: For playing audio directly from a Micro SD card.
- AUX In Port: For wired audio connection via the 3.5mm cable.

Figure 3: Multiple audio input options and charging ports.
3.4 Stability Features
The speaker is equipped with rubberized feet on the bottom to provide stability and prevent movement during use.

Figure 4: Rubberized feet for stability.
4. Setup Instructions
4.1 Charging the Speaker
Before first use, fully charge the speaker. Connect the provided USB-C cable to the speaker's charging port and a compatible USB power adapter (5V input). The charging indicator light will show the charging status. A full charge takes approximately 2.5 hours.
4.2 Power On/Off
- Power On: Long press the Power button until the indicator light illuminates.
- Power Off: Long press the Power button again until the indicator light turns off.
4.3 Bluetooth Pairing
The speaker utilizes Bluetooth 6.0 for a stable and pure connection experience.
- Ensure the speaker is powered on and in Bluetooth mode (the Bluetooth indicator light will flash).
- On your device (smartphone, tablet, etc.), enable Bluetooth and search for available devices.
- Select "JUOVI J6311" from the list.
- Once paired, the Bluetooth indicator light will become solid, and you will hear a confirmation tone.

Figure 5: Bluetooth 6.0 for stable signal and easy pairing.
4.4 TWS (True Wireless Stereo) Pairing
For an immersive stereo experience, two JUOVI J6311 speakers can be paired together, providing a total output of 40W.
- Ensure both speakers are powered on and in Bluetooth mode, but not connected to any device.
- On one speaker, short press the TWS button. It will emit a pairing tone.
- The two speakers will automatically connect to each other. Once connected, the TWS indicator light on both speakers will become solid.
- Now, connect your device to one of the speakers via Bluetooth as described in Section 4.3. Both speakers will play audio in stereo.

Figure 6: TWS Stereo Pairing for enhanced sound.
4.5 AUX Mode
To use the speaker with a wired connection:
- Connect one end of the 3.5mm audio cable to the AUX In port on the speaker.
- Connect the other end to the audio output jack of your device.
- The speaker will automatically switch to AUX mode, or you can press the Mode button (M) to select it.
4.6 TF Card Mode
To play music directly from a Micro SD card:
- Insert a Micro SD card (with audio files) into the Micro SD card slot.
- The speaker will automatically switch to TF Card mode, or you can press the Mode button (M) to select it.
5. Operating Instructions
5.1 Basic Audio Controls
- Play/Pause: Short press the Play/Pause button.
- Volume Up/Down: Short press the '+' or '-' buttons.
- Next Track: Long press the '+' button.
- Previous Track: Long press the '-' button.
5.2 Hands-Free Calling
With the built-in microphone, you can answer calls directly through the speaker when connected via Bluetooth.
- Answer Call: Short press the Play/Pause button when a call comes in.
- End Call: Short press the Play/Pause button during a call.
- Reject Call: Long press the Play/Pause button when a call comes in.

Figure 7: Hands-free calling with built-in mic clarity.
5.3 Voice Assistant
Activate your phone's voice assistant (e.g., Siri, Google Assistant) through the speaker.
- Activate Voice Assistant: Double-press the Play/Pause button.
5.4 Companion App
The JUOVI GO app allows for managing sound effects and customizing beat modes. Refer to the app's instructions for detailed usage.

Figure 8: Companion App interface for sound customization.
6. Maintenance
To ensure the longevity and optimal performance of your JUOVI J6311 speaker, follow these maintenance guidelines:
- Cleaning: Use a soft, dry cloth to clean the speaker's surface. Do not use abrasive cleaners or solvents.
- Waterproof Care: The speaker is IP68 waterproof. To maintain its waterproof rating, ensure all rubber caps covering the charging, AUX, and Micro SD card ports are securely closed before exposure to water.
- Storage: Store the speaker in a cool, dry place away from direct sunlight and extreme temperatures.
- Battery Care: For best battery life, avoid fully discharging the speaker frequently. Charge it regularly, even if not in use for extended periods.

Figure 9: IP68 Waterproof design for outdoor adventures.
7. Troubleshooting
If you encounter issues with your speaker, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Speaker does not power on. | Low battery. | Charge the speaker for at least 30 minutes. |
| No sound. | Volume too low; incorrect mode; device not connected. | Increase volume; press 'M' to switch modes; re-pair Bluetooth or check AUX cable. |
| Bluetooth pairing fails. | Speaker too far; interference; device's Bluetooth off. | Ensure speaker is within 10 meters; turn off other Bluetooth devices; restart speaker and device. |
| TWS pairing fails. | One speaker already connected to a device. | Ensure both speakers are disconnected from any device before initiating TWS pairing. |
| Poor sound quality. | Low battery; poor audio source; speaker placement. | Charge speaker; try a different audio source; adjust speaker position. |
8. Specifications
| Feature | Specification |
|---|---|
| Model Number | J6311 |
| Brand | JUOVI |
| Speaker Maximum Output Power | 24 Watts (Peak), 20 Watts (RMS) |
| Audio Output Mode | Stereo |
| Audio Driver Size | 50 Millimeters |
| Connectivity Technology | Bluetooth 6.0 |
| Bluetooth Range | 10 Meters |
| Battery Average Life | 24 Hours (varies with usage) |
| Battery Charge Time | 2.5 Hours |
| Water Resistance Level | IP68 Waterproof |
| Additional Features | Dustproof, Portable, Shockproof, TWS Stereo Pairing, Built-in Mic, Power Bank Function |
| Item Dimensions (D x W x H) | 2.43"D x 7.72"W x 2.6"H |
| Item Weight | 530 Grams |
| Input Voltage | 5 Volts |
| Frequency Response | 20 KHz |
| Signal-to-Noise Ratio | 90 dB |
| Impedance | 4 Ohms |

Figure 10: 24-hour battery endurance for extended playtime.
9. Warranty and Support
The JUOVI J6311 Bluetooth Speaker comes with a 1-year limited warranty from the date of purchase. This warranty covers manufacturing defects and workmanship under normal use. It does not cover damage caused by misuse, accidents, unauthorized modifications, or normal wear and tear.
For warranty claims, technical support, or any questions regarding your product, please contact JUOVI customer service through the retailer where you purchased the product or visit the official JUOVI website for contact information.
