1. Introduction
Thank you for choosing the LENRUE F88 Portable Karaoke Speaker. This device combines a powerful Bluetooth speaker with dual wireless microphones, offering a versatile and enjoyable audio experience. Its portable design, IPX5 waterproof rating, and dynamic LED lights make it suitable for various indoor and outdoor settings. Please read this manual carefully to ensure proper use and maintenance of your device.

Image 1: LENRUE F88 Portable Karaoke Speaker with its two wireless microphones.
2. What's in the Box
Upon unpacking, please ensure all items listed below are present and in good condition:
- 1 x LENRUE F88 Portable Karaoke Speaker
- 2 x Wireless Microphones
- 1 x USB Charging Cable (Type-C to USB-A)
- 1 x AUX Input Cable
- 1 x User Manual (this document)

Image 2: The LENRUE F88 speaker, two microphones, and included cables.
3. Product Features
- Dual Wireless Microphones: High-definition microphones with vocal elimination technology and various voice effects.
- Dynamic LED Lights: Integrated LED light display that pulses with the music, creating an engaging atmosphere.
- Portable Design: Equipped with an ergonomic handle for easy transport, ideal for both indoor and outdoor use.
- IPX5 Waterproof: Designed to withstand splashes and light rain, making it suitable for outdoor environments.
- Multiple Connectivity Options: Supports Bluetooth, TF card, USB, and AUX input for versatile audio playback.
- Intuitive Controls: Easy-to-use buttons on both the speaker and microphones for volume, track control, and mode selection.
- Omnidirectional Acoustics: Delivers evenly distributed, rich audio for an immersive listening experience.
- Extended Battery Life: Provides long hours of playback on a single charge.
4. Setup
- Charge the Speaker: Connect the USB charging cable to the speaker's Type-C port and a power source. The LED indicator will show charging status.
- Charge the Microphones: Connect the USB charging cable to the micro USB port at the bottom of each microphone and a power source. The LED indicator on the microphone will light up during charging.
- Power On: Press and hold the power button on the speaker and each microphone until the indicator lights turn on.
- Bluetooth Pairing: The speaker will automatically enter Bluetooth pairing mode. On your device (smartphone, tablet), search for "LENRUE F88" in the Bluetooth settings and select it to connect. The speaker will emit a confirmation sound upon successful pairing.
- Microphone Connection: The wireless microphones should automatically connect to the speaker once both are powered on. If not, power cycle the microphone.
5. Operating Instructions
5.1 Speaker Controls

Image 3: Speaker control panel with buttons for power, mode, volume, play/pause, and LED light control.
- Power Button (⏻): Press and hold to turn the speaker on/off.
- Mode Button (M): Short press to switch between Bluetooth, TF Card, USB, and AUX input modes.
- Volume Up (+): Short press to increase volume. Long press for next track.
- Volume Down (-): Short press to decrease volume. Long press for previous track.
- Play/Pause Button (▶): Press to play or pause music.
- LED Light Control Button (☀): Press to cycle through different LED light modes or turn them off.
5.2 Microphone Controls

Image 4: Microphone controls including power, volume, and voice effect mode.
- Power Button (⏻): Press and hold to turn the microphone on/off.
- Volume Up (+): Press to increase microphone volume.
- Volume Down (-): Press to decrease microphone volume.
- Voice Effect Mode (M): Short press to cycle through different voice effects (e.g., original, female, male, baby, monster).
- Reverb Control: The microphone has a built-in reverb effect. To adjust or disable it, refer to the troubleshooting section.
5.3 Connectivity Options

Image 5: Rear panel showing USB, TF card, and AUX input ports.
- Bluetooth: Connect wirelessly to your smartphone or other Bluetooth-enabled devices.
- TF Card: Insert a TF (MicroSD) card into the designated slot to play music directly.
- USB: Connect a USB flash drive to play audio files.
- AUX Input: Use the provided AUX cable to connect to devices without Bluetooth capabilities.
6. Maintenance
- Cleaning: Wipe the speaker and microphones with a soft, dry cloth. Do not use harsh chemicals or abrasive cleaners.
- Storage: Store the device in a cool, dry place away from direct sunlight and extreme temperatures.
- Battery Care: For optimal battery life, fully charge the device before first use and recharge regularly. Avoid completely draining the battery for extended periods.
- Water Resistance: While IPX5 waterproof, avoid submerging the speaker in water. Ensure port covers are securely closed when exposed to moisture.
7. Troubleshooting
- No Sound from Speaker:
- Ensure the speaker is powered on and charged.
- Check the volume levels on both the speaker and your connected device.
- Verify Bluetooth connection or AUX/USB/TF card input is correctly selected and functioning.
- Microphone Not Connecting/No Sound:
- Ensure microphones are powered on and charged.
- Power cycle the microphone (turn off, then on again) to re-establish connection with the speaker.
- Keep microphones within close range of the speaker for optimal connection.
- Excessive Reverb on Microphone:
- The microphones are designed with a default reverb effect. To adjust or minimize reverb, press the 'M' button on the microphone. Repeated presses may cycle through different reverb levels or modes. If a specific 'no reverb' mode is not available, selecting a different voice effect might alter the reverb intensity.
- Feedback/Screeching Sound:
- Avoid placing microphones too close to the speaker when in use.
- Reduce the microphone volume.
- LED Lights Not Working:
- Press the LED light control button (☀) on the speaker to cycle through modes or turn them on.
8. Specifications
| Brand | LENRUE |
| Model Number | F88 (A2) |
| Mounting Type | Tabletop |
| Power Source | Battery Powered |
| Connector Type | Micro USB (for mics), Type-C (for speaker) |
| Number of Channels | 2 |
| Audio Input | Bluetooth, AUX in, TF Card, USB |
| Recommended Uses | Home, Indoor/Outdoor Fun |
| Item Weight | 2.46 pounds |
| Product Dimensions (L x W x H) | 7.48 x 5.9 x 7.48 inches |
| Batteries | 1 Lithium Metal battery required (included) |
| Speaker Count | 1 |
| Output Wattage | 15 Watts |
| Battery Type | Lithium Ion |
| Connectivity Technology | Bluetooth |
| Compatible Devices | Smartphone |
9. Warranty and Support
LENRUE is committed to providing high-quality audio products and exceptional customer service. For any questions, concerns, or technical support regarding your F88 Portable Karaoke Speaker, please refer to the contact information provided with your product packaging or visit the official LENRUE website. Specific warranty details are typically included with your purchase documentation.





