1. Introduction
This manual provides instructions for the safe and efficient operation of your Lenrue F4 Mini Wireless Bluetooth Speaker. This portable speaker is designed for various environments, featuring IP45 water and dust resistance, a built-in microphone for hands-free communication, and multiple connectivity options.
Please read this manual thoroughly before using the product and retain it for future reference.
2. Product Overview
Familiarize yourself with the components and controls of your Lenrue F4 speaker.
Figure 2.1: Front, side, and bottom views of the Lenrue F4 speaker with labeled controls and ports.
Component Identification:
- Answer/Pause/Phone Button: Used for call management and music playback control.
- Next/Volume+ Button: Short press for next track, long press to increase volume.
- Last/Volume- Button: Short press for previous track, long press to decrease volume.
- ON/OFF Button / Function Key: Powers the speaker on/off and switches modes.
- MIC: Built-in microphone for hands-free calls.
- Light: Indicator light for status.
- Micro USB Charging Socket: For charging the speaker.
- AUX Port: 3.5mm audio input for wired connection.
- TF Card Slot: For playing music directly from a TF (MicroSD) card.
- Reset Button: Used to reset the device.
3. Setup
3.1 Charging the Speaker
Before initial use, fully charge the speaker. Connect the provided Micro USB charging cable to the speaker's Micro USB charging socket and the other end to a USB power source (e.g., computer USB port, USB wall adapter).
- The indicator light will show charging status.
- A full charge typically takes approximately 2-3 hours.
3.2 Powering On/Off
- To power on: Press and hold the ON/OFF button for a few seconds until you hear an audible prompt and the indicator light illuminates.
- To power off: Press and hold the ON/OFF button again for a few seconds until you hear an audible prompt and the indicator light turns off.
4. Operating Instructions
4.1 Bluetooth Pairing
- Ensure the speaker is powered on and in Bluetooth pairing mode (the indicator light will flash).
- On your device (smartphone, tablet, etc.), enable Bluetooth and search for available devices.
- Select "F4" from the list of found devices.
- Once paired, the speaker will provide an audible confirmation, and the indicator light will stop flashing.
- The speaker has a maximum transmission distance of approximately 10 meters (33 feet).
4.2 Music Playback
- Bluetooth Mode: After successful pairing, music played on your device will stream through the speaker.
- Press the Answer/Pause/Phone button to play or pause music.
- Short press Next/Volume+ for the next track.
- Short press Last/Volume- for the previous track.
- AUX Mode: Connect your audio device to the speaker's AUX port using the provided 3.5mm audio cable. The speaker will automatically switch to AUX mode. Control playback from your connected device.
- TF Card Mode: Insert a TF (MicroSD) card with music files into the TF card slot. The speaker will automatically detect the card and begin playback. Use the Next/Volume+ and Last/Volume- buttons for track navigation.
4.3 Hands-free Calling
When connected via Bluetooth, the built-in microphone allows for hands-free calls.
- To answer an incoming call: Short press the Answer/Pause/Phone button.
- To end a call: Short press the Answer/Pause/Phone button again.
- To reject an incoming call: Long press the Answer/Pause/Phone button.
4.4 Volume Control
- To increase volume: Long press the Next/Volume+ button.
- To decrease volume: Long press the Last/Volume- button.
5. Maintenance
5.1 Cleaning
Wipe the speaker with a soft, damp cloth. Do not use harsh chemicals or abrasive cleaners. Ensure all ports are dry before charging or connecting cables.
5.2 Water and Dust Resistance (IP45)
Figure 5.1: The Lenrue F4 speaker is rated IP45, making it resistant to water splashes and dust ingress.
The Lenrue F4 speaker is certified IP45, meaning it is protected against dust ingress and low-pressure water jets from any direction. This makes it suitable for use in environments like bathrooms or outdoors where it might encounter splashes or light rain.
- Do not submerge the speaker in water.
- Ensure the charging port cover is securely closed to maintain water resistance.
5.3 Storage
Store the speaker in a cool, dry place away from direct sunlight and extreme temperatures when not in use for extended periods.
6. 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 from speaker. | Ensure speaker is on and in pairing mode. Turn on Bluetooth on your device. Move device closer to speaker (within 10m). Try resetting the speaker. |
| No sound. | Volume too low; incorrect mode; faulty cable (AUX). | Increase speaker and device volume. Ensure correct mode (Bluetooth, AUX, TF Card). Check AUX cable connection. |
| Controls (track skip, pause) not working. | Compatibility issue with device (Android specific issue mentioned in reviews). | Ensure your device is fully compatible. Try resetting the speaker. For some Android devices, full control functionality may vary. |
| Speaker is unresponsive. | Software glitch. | Locate the Reset button (often a small pinhole) and press it with a thin object (e.g., paperclip) to reset the speaker. |
7. Specifications
| Feature | Detail |
|---|---|
| Brand | LENRUE |
| Model Number | F4 |
| Speaker Maximum Output | 3 Watts |
| Connectivity Technology | AUX, Bluetooth |
| Mounting Type | Tabletop |
| Speaker Type | Outdoor, Subwoofer |
| Special Features | Bluetooth, Portable, Wireless, Built-in Microphone, Dustproof, Waterproof |
| Recommended Uses | iPad, Smartphone, Tablet |
| Color | Black |
| Waterproof Rating | IP45 |
| Control Method | Button |
| Average Battery Life | 5 Hours |
8. Package Contents
The following items are included in your Lenrue F4 Mini Wireless Bluetooth Speaker package:
Figure 8.1: All items included in the product package.
- Lenrue F4 Bluetooth Speaker Unit
- Micro USB Charging Cable
- 3.5mm Aux-in Audio Cable
- Metal Hook (Carabiner)
- User Manual (Multi-language)
- Suction Cup (Note: Some users reported compatibility issues with the suction cup bolt. Please ensure proper fit before use.)
9. Warranty and Support
This product comes with a 6-month warranty. For any product-related inquiries, technical support, or warranty claims, please contact the seller or manufacturer through your purchase platform.
Please retain your proof of purchase for warranty purposes.