1. Introduction
This manual provides detailed instructions for the operation and maintenance of your AL-8319 Portable Bluetooth Speaker. Please read this manual carefully before using the product to ensure correct and safe usage.
The AL-8319 Speaker is designed to deliver clear and precise audio, with dynamic RGB LED lighting for an enhanced visual experience. Its portability and multiple connectivity options make it ideal for various situations.
2. Package Contents
Please check that all the following items are present in the package:
- 1x AL-8319 Portable Bluetooth Speaker
- 1x USB charging cable
- 1x User Manual (this document)
3. Product Overview
Familiarize yourself with the components and controls of your speaker.

Image 1: Top and side view of the black AL-8319 speaker, showing the control buttons on the top and the illuminated RGB LED bar on the side.
Top Controls:
- Mode Button (M): Switches between Bluetooth, FM Radio, USB, TF Card, and AUX modes.
- Power Button: Press and hold to power on or off. Short press for Play/Pause in Bluetooth/USB/TF mode.
- Volume - / Previous Track Button: Short press for previous track. Press and hold to decrease volume.
- Volume + / Next Track Button: Short press for next track. Press and hold to increase volume.
- Light Button (Sun icon): Controls the RGB LED lighting effects.

Image 2: Rear view of the AL-8319 speaker, highlighting the input ports for USB, TF card (MicroSD), and AUX (3.5mm), as well as the DC charging port.
Connection Ports (Rear/Bottom):
- DC Port (Charging): For connecting the USB charging cable.
- TF Card Slot (MicroSD): For audio playback from a memory card.
- USB Port: For audio playback from a USB flash drive.
- AUX Input (3.5mm): For connecting external audio devices via a 3.5mm cable.
4. Initial Setup
4.1. Charging the Speaker
- Connect the provided USB cable to the DC port on the speaker.
- Connect the other end of the USB cable to a USB power adapter (not included) or a computer's USB port.
- The charging indicator (if present) will light up during charging and turn off when the battery is fully charged.
- For first use, it is recommended to fully charge the battery.
4.2. Powering On and Off
- To Power On: Press and hold the Power button for approximately 3 seconds. You will hear a startup sound.
- To Power Off: Press and hold the Power button for approximately 3 seconds. You will hear a shutdown sound.
5. Operating Instructions
5.1. Bluetooth Mode
- Turn on the speaker. It will automatically enter Bluetooth mode, or you can press the M (Mode) button to select it.
- On your device (smartphone, tablet, etc.), enable Bluetooth and search for available devices.
- Select "AL-8319" from the list of devices.
- After successful pairing, you will hear a confirmation sound.
- You can now play audio from your device through the speaker.
- To control playback (Play/Pause, Next/Previous Track, Volume), use the buttons on the speaker or your device.
5.2. USB / TF Card Playback
- Insert a USB flash drive or a TF (MicroSD) card pre-loaded with audio files (MP3, etc.) into the corresponding port.
- The speaker will automatically detect the device and start playing music. If not, press the M (Mode) button to switch to USB or TF mode.
- Use the speaker's control buttons to manage playback.
5.3. AUX Mode (Audio Input)
- Connect one end of a 3.5mm audio cable to the AUX port on the speaker.
- Connect the other end to the external audio device (MP3 player, computer, etc.).
- Press the M (Mode) button to switch to AUX mode.
- Control playback and volume from your external audio device.
5.4. FM Radio
- Press the M (Mode) button to switch to FM Radio mode.
- Short press the Power (Play/Pause) button to start automatic station scanning. The speaker will scan and save available stations.
- Use the Volume - / Previous Track and Volume + / Next Track buttons to navigate between saved stations.
5.5. Hands-Free Function (Phone Calls)
- When the speaker is connected to your smartphone via Bluetooth and a call is received, music playback will pause.
- Short press the Power (Play/Pause) button to answer the call.
- Short press the Power (Play/Pause) button again to end the call.
- Press and hold the Power (Play/Pause) button to reject an incoming call.
5.6. RGB LED Lighting Control
- Press the Light (Sun icon) button to cycle through different RGB LED lighting modes.
- Press and hold the Light (Sun icon) button to turn the LED lights off or on.
6. Maintenance
- Cleaning: Use a soft, dry cloth to clean the speaker's surface. Do not use liquid or abrasive cleaning agents.
- Storage: When not in use for an extended period, store the speaker in a cool, dry place, away from direct sunlight and extreme temperatures.
- Battery: To prolong battery life, charge it regularly, even if not in use. Avoid frequently fully discharging the battery.
- Water: This product is not waterproof. Avoid exposure to liquids.
7. Troubleshooting
| Problem | Solution |
|---|---|
| The speaker does not turn on. | Check if the battery is charged. Connect the charging cable and try again. |
| Cannot pair via Bluetooth. | Ensure the speaker is in Bluetooth mode and your device's Bluetooth is enabled. Bring devices closer. Try restarting both devices. |
| No sound or low volume. | Increase the volume on both the speaker and your device. Check if the AUX cable is connected correctly (if using AUX mode). |
| Poor FM radio reception. | Move the speaker to a location with a better signal. The internal antenna may be sensitive to position. |
| USB/TF playback not working. | Ensure audio files are in a compatible format (e.g., MP3) and the storage device is formatted correctly. Try with another USB drive/TF card. |
8. Technical Specifications
| Model: | AL-8319 |
| Wireless Connectivity: | Bluetooth 5.0 |
| Inputs: | USB, AUX (3.5mm), TF Card (MicroSD), FM Radio |
| Lighting: | Built-in RGB LED |
| Operation Distance: | Up to 10 meters |
| Power Source: | Internal rechargeable battery via USB |
| Hands-free Function: | Yes (with built-in microphone) |
| Dimensions (Approx.): | 10D x 10W x 10H centimeters (Note: These dimensions may be approximate and generic.) |
| Manufacturer: | LTOMEX |
9. Warranty and Support
This product comes with a 3-month warranty against manufacturing defects, starting from the date of purchase. The warranty does not cover damages caused by improper use, accidents, unauthorized modifications, or normal wear and tear.
For technical support or warranty information, please contact your reseller or the manufacturer.