SANSUI U2 Multi-functional Portable Bluetooth Speaker

1. Introduction

Thank you for purchasing the SANSUI U2 Multi-functional Portable Bluetooth Speaker. This device combines a high-volume wireless Bluetooth speaker with features such as FM radio, one-click recording, and a timed shutdown function. Its compact design and multiple playback options make it an ideal companion for various activities, from camping to casual listening at home.

2. Key Features

• Bluetooth 5.3 Connectivity: Stable and lag-free wireless audio streaming.
• Multi-functional Playback: Supports Bluetooth, USB, TF Card, and AUX input.
• FM Radio: Built-in FM tuner to capture radio wave wonders.
• One-Key Recording: Easily record audio with a single button press (requires memory card).
• Smart Timed Shutdown: Preset shutdown time for peaceful sleep or power saving.
• Dynamic Sound Quality: High-sensitivity speaker with independent diaphragm for rich bass.
• Compact & Portable: Lightweight (320g) with a lanyard design for easy carrying.
• RGB Colorful Lights: Lights that sync with music rhythm to enhance atmosphere.
• Intelligent Decoder: Supports APE/FLAC/WAV/MP3 audio formats.

3. Specifications

4. Package Contents

Please check the package for the following items:

• SANSUI U2 Portable Bluetooth Speaker
• USB Charging Cable
• User Manual

5. Setup Guide

5.1 Charging the Speaker

1. Connect the provided USB charging cable to the DC 5V port on the speaker.
2. Plug the other end of the USB cable into a compatible USB power adapter (DC 5V 1A recommended) or a computer's USB port.
3. The charging indicator (usually on the display) will show the charging status. A full charge typically takes a few hours.

5.2 Power On/Off

• Power On: Press and hold the Power Button (, labeled 04 in diagram) for a few seconds until the display lights up.
• Power Off: Press and hold the Power Button again for a few seconds.

5.3 Bluetooth Pairing

1. Turn on the speaker. It will automatically enter Bluetooth pairing mode, indicated by a flashing 'BLUE' on the electronic display.
2. On your mobile device (smartphone, tablet, etc.), enable Bluetooth and search for available devices.
3. Select "SANSUI U2" from the list of devices.
4. Once connected, the speaker will emit a confirmation sound, and 'BLUE' on the display will stop flashing.

5.4 Inserting TF Card / USB Drive

• Locate the TF card slot or USB port on the side of the speaker.
• Gently insert your TF card or USB drive into the corresponding slot/port. The speaker will automatically switch to TF card or USB playback mode if media is detected.

5.5 AUX Connection

• Connect one end of a 3.5mm audio cable (not included) to the AUX port on the speaker.
• Connect the other end to the audio output jack of your external device (e.g., MP3 player, computer).
• Press the Mode Button (labeled 05 in diagram) to switch to AUX mode.

6. Operation Guide

6.1 Button Functions Overview

1. Electronic Display: Shows current mode, time, battery, etc.
2. Number Buttons (0-9, *): Used for direct track selection, FM frequency input, etc.
3. Timer Button (定关): Sets the timed shutdown function.
4. Power Switch/Play/Pause/Phone Button (Power icon): Long press to power on/off. Short press to play/pause music. Short press to answer/end calls in Bluetooth mode.
5. Mode/Loop Button (模式): Short press to switch between Bluetooth, FM Radio, TF Card, USB, and AUX modes. Long press for loop playback options.
6. Next Track/Volume+ Button (V+): Short press for next track. Long press to increase volume.
7. Previous Track/Volume- Button (V-): Short press for previous track. Long press to decrease volume.
8. Delete Button (删除): Used to delete recorded files.
9. Record Button (录音): Short press to start/stop recording.

6.2 Playing Music

• Bluetooth Mode: After successful pairing (see 5.3), start playing music on your connected device.
• TF Card/USB Mode: Insert a TF card or USB drive with MP3/WAV/FLAC/APE files. The speaker will automatically detect and play. Use the Next/Previous Track buttons to navigate.
• AUX Mode: Connect an external device via the AUX port (see 5.5). Play music from your external device.

6.3 FM Radio Operation

1. Press the Mode Button (模式) to switch to FM Radio mode.
2. Automatic Scan: Long press the Play/Pause Button to automatically scan and save available FM stations.
3. Manual Tuning: Use the Number Buttons to directly input the desired FM frequency.
4. Switching Stations: Use the Next/Previous Track buttons to cycle through saved stations.

6.4 Recording Function

• Ensure a TF card is inserted into the speaker.
• Press the Record Button (录音) to start recording. The display will indicate recording is active.
• Press the Record Button again to stop recording.
• To play back recordings, switch to the appropriate mode (usually TF card mode) and navigate to the recorded files.
• To delete a recording, select the file and press the Delete Button (删除).

6.5 Timed Shutdown

• Press the Timer Button (定关) to activate the timed shutdown function.
• Use the Number Buttons to set the desired shutdown time (e.g., in minutes).
• The speaker will automatically power off after the set time, ideal for listening before sleep.

6.6 RGB Colorful Lights

• The speaker features RGB colorful lights that illuminate with the rhythm of the music.
• These lights are typically automatic and enhance the listening experience. (No explicit control buttons mentioned, assume automatic).

7. Maintenance and Care

• Cleaning: Use a soft, dry cloth to clean the speaker's surface. Do not use abrasive cleaners or solvents.
• Storage: Store the speaker in a cool, dry place away from direct sunlight and extreme temperatures.
• Water Exposure: This speaker is NOT waterproof. Avoid exposing it to water or excessive moisture.
• Battery Care: To prolong battery life, avoid fully discharging the battery frequently. Charge it regularly, even if not in use for extended periods.
• Avoid Impacts: Protect the speaker from drops and impacts, which can damage internal components.

8. Troubleshooting

Speaker does not power on:

Ensure the battery is charged. Connect the speaker to a power source using the USB cable and try again.

Cannot pair via Bluetooth:

Make sure the speaker is in Bluetooth mode and discoverable. Check that Bluetooth is enabled on your device and it's within the 10m range. Try restarting both the speaker and your device.

No sound or low volume:

Check the volume levels on both the speaker and your connected device. Ensure the correct playback mode (Bluetooth, TF, USB, AUX) is selected. For AUX mode, ensure the cable is fully inserted.

FM radio reception is poor:

Try repositioning the speaker to improve signal reception. Perform an automatic scan again to find stronger stations.

Recording not working:

Ensure a compatible TF card is properly inserted and has sufficient free space. Check if the TF card is formatted correctly.

9. User Tips

• For optimal sound quality, place the speaker on a stable surface.
• When using the FM radio, extending the lanyard or placing the speaker near a window might improve reception.
• To conserve battery, remember to use the timed shutdown feature, especially when listening before sleep.
• Keep the speaker's firmware updated if updates become available (check manufacturer's website).

10. Warranty and Support

For warranty information, technical support, or service inquiries, please refer to the documentation provided at the time of purchase or contact your retailer. Keep your proof of purchase for any warranty claims.