TOPTECH Jet-4
TOPTECH Jet-4 Bluetooth Portable Speaker User Manual
Model: Jet-4
1. Introduction
This manual provides detailed instructions for the operation and maintenance of your TOPTECH Jet-4 Bluetooth Portable Speaker. Please read this manual thoroughly before using the device to ensure proper functionality and to maximize your listening experience. The Jet-4 speaker is designed for versatile audio playback, offering wireless Bluetooth connectivity, multiple input options, and a built-in karaoke mode.
2. Package Contents
- TOPTECH Jet-4 Bluetooth Portable Speaker
- Charging Cable (DC 5V)
- User Manual
- (Optional: Wired Microphone, depending on specific package)
3. Product Overview
The TOPTECH Jet-4 is a compact and powerful portable speaker designed for various audio needs. Its robust design and integrated handle make it suitable for both indoor and outdoor use.

Figure 3.1: Front view of the TOPTECH Jet-4 speaker, showcasing its illuminated speaker grille and integrated carry handle.
3.1 Key Features
- Seamless Connectivity: Built-in Bluetooth for wireless pairing with smartphones and tablets. Includes a 3.5mm AUX jack for non-Bluetooth devices and supports TF/USB input for enhanced versatility.
- Enhanced Karaoke Mode: Features colorful lights for a dynamic atmosphere and allows effortless toggling between accompaniment and voice modes. Compatible with wired microphones.
- Simple Multi-Function Control: Intuitive console for adjusting sound effects, microphone settings, and mode switching.
- True Wireless Stereo (TWS) Functionality: Pair two Jet-4 speakers for an immersive stereo audio experience.
- Extended Playtime: Equipped with a rechargeable DC 5V battery, providing up to 6 hours of continuous music playback.
4. Controls and Ports
Familiarize yourself with the control panel and various input/output ports on your Jet-4 speaker.

Figure 4.1: Detailed view of the control panel, showing the microphone input, power switch, mode button, track controls, TF card slot, USB port, and DC 5V charging port.
- MIC Input: 3.5mm jack for connecting a wired microphone.
- ON/OFF Switch: Toggles the speaker power on or off.
- M (Mode) Button: Cycles through available input modes (Bluetooth, AUX, TF Card, USB).
- Previous/Volume Down (-): Short press for previous track, long press to decrease volume.
- Play/Pause: Toggles playback.
- Next/Volume Up (+): Short press for next track, long press to increase volume.
- T. CARD Slot: For inserting a TF (MicroSD) card.
- U FLASH Port: For inserting a USB flash drive.
- DC 5V Port: Charging input for the speaker.
5. Setup
5.1 Charging the Speaker
Before first use, fully charge the speaker. Connect the provided charging cable to the DC 5V port on the speaker and the other end to a compatible USB power source (e.g., USB wall adapter, computer USB port). The charging indicator will illuminate during charging and turn off when fully charged.

Figure 5.1: The speaker is equipped with a rechargeable battery for portable use.
5.2 Bluetooth Pairing
- Turn on the speaker using the ON/OFF switch. The speaker will enter Bluetooth pairing mode automatically, indicated by a flashing light or audible prompt.
- Enable Bluetooth on your smartphone, tablet, or other Bluetooth-enabled device.
- Search for "Jet-4" in the list of available Bluetooth devices.
- Select "Jet-4" to connect. Once connected, the speaker will provide an audible confirmation.

Figure 5.2: Bluetooth pairing process with a mobile device.
5.3 True Wireless Stereo (TWS) Pairing
To achieve a true stereo sound experience, you can pair two Jet-4 speakers together.
- Ensure both Jet-4 speakers are powered on and in Bluetooth mode, but not yet connected to any device.
- On one of the speakers (this will be your primary speaker), long press the "M" (Mode) button until you hear a confirmation tone, indicating TWS pairing mode.
- The two speakers will automatically connect to each other. Once connected, the primary speaker will indicate successful TWS pairing.
- Now, connect your Bluetooth device to the primary speaker as described in Section 5.2. Audio will play through both speakers in stereo.

Figure 5.3: Two Jet-4 speakers configured for TWS playback.
6. Operating Instructions
6.1 Basic Audio Playback
- After connecting via Bluetooth, USB, or TF card, use the Play/Pause button to control playback.
- Use the Previous/Volume Down (-) and Next/Volume Up (+) buttons for track navigation (short press) and volume adjustment (long press).
- To switch between input modes, short press the "M" (Mode) button.
6.2 Karaoke Mode
- Connect a wired microphone to the MIC input jack.
- Play your desired music.
- The speaker's colorful lights will activate automatically, enhancing the karaoke experience.
- Adjust microphone volume and echo effects using the controls on the speaker (if available, refer to control panel diagram).
6.3 Connecting Other Devices (AUX, USB/TF)
- AUX Input: Connect an audio device using a 3.5mm AUX cable to the speaker's AUX port (if available, typically shared with MIC input or separate). Press the "M" button to switch to AUX mode.
- USB/TF Card: Insert a USB flash drive into the U FLASH port or a TF card into the T. CARD slot. The speaker will automatically detect and play audio files (MP3, WAV, etc.) from the storage device. Press the "M" button to switch to USB or TF mode if it doesn't switch automatically.
7. Maintenance
- Keep the speaker away from water, moisture, and direct sunlight.
- Clean the speaker with a soft, dry cloth. Do not use abrasive cleaners or solvents.
- Avoid dropping or subjecting the speaker to strong impacts.
- Store the speaker in a cool, dry place when not in use for extended periods.
8. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Speaker does not turn on. | Low battery. | Charge the speaker fully. |
| Cannot pair via Bluetooth. | Speaker not in pairing mode; device Bluetooth off; too far from speaker. | Ensure speaker is in Bluetooth mode. Turn device Bluetooth off/on. Move device closer to speaker (within 100ft). |
| No sound from speaker. | Volume too low; incorrect input mode; device not playing. | Increase speaker and device volume. Press "M" to select correct input mode. Ensure audio is playing on the connected device. |
| TWS pairing failed. | Speakers already connected to a device; incorrect pairing steps. | Disconnect both speakers from any devices. Follow TWS pairing steps carefully (Section 5.3). |
9. Specifications
| Feature | Detail |
|---|---|
| Brand | TOPTECH |
| Model Number | Jet-4 |
| Output Wattage | 400 Watts |
| Connectivity Technology | Bluetooth, USB |
| Audio Input | Bluetooth, 3.5mm AUX jack, TF/USB input, microphone input |
| Power Source | Battery Powered |
| Battery Life | Up to 6 hours (approx.) |
| Product Dimensions (L x W x H) | 4 x 4 x 10 inches |
| Item Weight | 1.54 pounds (0.7 Kilograms) |
| Color | Black |
| Mounting Type | Freestanding, Plug Mount |
| Compatible Devices | Smartphone, Tablet |
| UPC | 689259338579 |
10. Warranty and Support
For warranty information or technical support, please contact TOPTECH customer service through the retailer where the product was purchased or visit the official TOPTECH website. Please retain your proof of purchase for any warranty claims.
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