Introduction
The LEICEX Portable Mini Bluetooth Speaker (Model B11-TF) is a compact, waterproof audio device designed for versatile use. Featuring Bluetooth 5.0 connectivity, TF card support, and a durable design, it provides portable sound for various environments. This manual provides essential information for setting up, operating, maintaining, and troubleshooting your speaker.

Image: The LEICEX Mini Bluetooth Speaker, shown held in a hand with a water splash, highlighting its compact size and waterproof feature.
Package Contents
Please verify that all items are present in the package:
- LEICEX Portable Mini Bluetooth Speaker
- USB-C Charging Cable
- Lanyard
- Instruction Manual

Image: A visual representation of the speaker, USB-C cable, lanyard, and instruction manual included in the product package.
Setup
Charging the Speaker
Before first use, fully charge the speaker. Connect the provided USB-C cable to the charging port on the speaker and the other end to a standard USB power adapter (not included) or a computer's USB port. The charging indicator light will illuminate during charging and turn off when fully charged.
Power On/Off
To power on the speaker, press and hold the power button (marked with a power symbol) for approximately 3 seconds until you hear an audible prompt. To power off, press and hold the power button again for 3 seconds.

Image: A detailed diagram illustrating the location and function of the speaker's buttons, microphone, TF memory card slot, and USB-C port.
Operating Instructions
Bluetooth Pairing
- Ensure the speaker is powered on.
- On your device (smartphone, tablet, laptop), enable Bluetooth and search for available devices.
- Select "LEICEX B11-TF" from the list of devices.
- Once paired, the speaker will indicate a successful connection with an audible prompt. The maximum connection distance is approximately 30 feet (9 meters).

Image: The LEICEX Mini Bluetooth Speaker resting on a smartphone, demonstrating its compact size and readiness for Bluetooth connection.
Stereo Pairing (TWS Function)
For an enhanced audio experience, you can pair two LEICEX B11-TF speakers together for true wireless stereo (TWS) sound.
- Ensure both speakers are powered off.
- Power on both speakers simultaneously. They will automatically attempt to pair with each other.
- Once successfully paired with each other, one speaker will act as the master.
- Connect your device via Bluetooth to the master speaker as described in the "Bluetooth Pairing" section.
Note: Stereo pairing is only supported for Bluetooth audio playback. When using a TF card, only the speaker with the TF card inserted will play audio.

Image: Two LEICEX Mini Bluetooth Speakers positioned on either side of a smartphone, illustrating the stereo pairing feature for immersive sound.
TF Card Playback
Insert a TF (Micro SD) card (up to 32GB, not included) pre-loaded with audio files into the TF card slot on the speaker. The speaker will automatically switch to TF card playback mode. Use the control buttons to manage playback.
Control Functions
Refer to the "Speaker Button Description" image in the Setup section for button locations.
- Power Button: Long press to Power ON/OFF. Single click to Play/Pause music.
- Volume Down / Previous Track: Long press for Volume Down. Single click for Previous Music track.
- Volume Up / Next Track: Long press for Volume Up. Single click for Next Music track.
Hands-free Calling
When connected to a smartphone via Bluetooth, the speaker can be used for hands-free calls. A single click on the power button will answer or end a call.
Maintenance
Waterproof Rating (IPX7)
The speaker features an IPX7 waterproof rating, meaning it can be submerged in water up to 1 meter for 30 minutes. This makes it suitable for use in showers, by the pool, or during light rain. Ensure the charging port cover is securely closed before exposing the speaker to water.

Image: The LEICEX Mini Bluetooth Speaker hanging by its lanyard in a shower, demonstrating its suitability for wet environments.
Cleaning
Wipe the speaker with a soft, damp cloth. Do not use abrasive cleaners or solvents, as these may damage the surface or internal components.
Battery Care
To prolong battery life, avoid fully discharging the speaker frequently. Charge the speaker regularly, even if not in use for extended periods. Store the speaker in a cool, dry place.
Troubleshooting
- Speaker does not power on: Ensure the speaker is fully charged. Connect it to a power source using the USB-C cable and allow it to charge for at least 30 minutes before attempting to power on again.
- No sound: Check the volume level on both the speaker and your connected device. Ensure the speaker is properly paired via Bluetooth or that the TF card is correctly inserted and contains playable audio files.
- Cannot pair via Bluetooth: Ensure the speaker is in pairing mode (usually indicated by a flashing LED). Turn off Bluetooth on your device and then turn it back on. If issues persist, try restarting both the speaker and your device.
- Stereo pairing not working: Ensure both speakers are powered off before attempting to pair them together. After they pair with each other, connect your device to the master speaker. Remember that TF card playback does not support stereo sound across two speakers.
- Water damage concerns: While the speaker is IPX7 waterproof, always ensure the charging port cover is sealed tightly before exposure to water. If the speaker has been submerged, allow it to dry completely before attempting to charge or power on.
Specifications
| Model Name | B11-TF |
| Brand | LEICEX |
| Connectivity Technology | Bluetooth 5.0 |
| Wireless Range | Up to 30 feet (9 meters) |
| Water Resistance Level | IPX7 (Waterproof) |
| Speaker Maximum Output Power | 2 Watts |
| Audio Output Mode | Stereo (with TWS pairing) |
| Playtime | Approximately 4 hours |
| Charging Port | USB-C |
| TF Card Support | Yes, up to 32GB |
| Product Dimensions | 1.45"D x 1.45"W x 1.25"H |
| Item Weight | 2.89 ounces |
| Material | Durable Plastic or Rubber |

Image: A diagram illustrating the compact dimensions of the LEICEX Mini Bluetooth Speaker: 1.45 inches in diameter and 1.25 inches in height.
Warranty and Support
Warranty Information
The LEICEX Portable Mini Bluetooth Speaker comes with a one-year warranty for host parts from the date of purchase. This warranty covers manufacturing defects under normal use. It does not cover damage caused by misuse, accidents, unauthorized modifications, or natural disasters.
Customer Support
If you encounter any issues or have questions regarding your LEICEX speaker, please refer to the contact information provided with your purchase documentation or visit the official LEICEX support website for assistance.