1. Introduction
Thank you for purchasing the PRSCFUM S3 Bluetooth Speaker. This portable speaker combines high-quality stereo sound with vibrant LED lights and robust IPX7 waterproofing, making it ideal for various environments, including wet conditions. Featuring Bluetooth 5.3 technology, it ensures stable and efficient wireless connectivity. This manual provides detailed instructions for setup, operation, maintenance, and troubleshooting to help you get the most out of your speaker.
2. Safety Information
Please read and understand all safety instructions before using this product. Keep this manual for future reference.
- Do not disassemble, repair, or modify the speaker. This may cause damage, electric shock, or fire.
- Keep the speaker away from extreme temperatures, direct sunlight, and heat sources.
- Ensure the charging port cover is securely closed when using the speaker in wet environments to maintain IPX7 waterproofing.
- Do not expose the speaker to corrosive liquids.
- Use only the provided charging cable or a certified equivalent.
- Avoid prolonged listening at high volumes to prevent hearing damage.
3. Product Overview
The PRSCFUM S3 speaker is designed for portability and durability, featuring a compact size, a strong suction cup for versatile mounting, and a hanging hole for easy transport.

Figure 3.1: Front view of the PRSCFUM S3 Bluetooth Speaker, showcasing its circular design and integrated LED lights.
Key Features:
- Bluetooth 5.3: For stable and extended wireless range (up to 15 meters).
- IPX7 Waterproof: Withstands full immersion in one meter of water for up to 30 minutes.
- HD Stereo Sound: Delivers clear audio with 5 Watts of power.
- Multi-color LED Lights: Features music rhythm light, color breathing light, and optional static colors.
- Hands-free Calling: Integrated HD microphone for phone calls.
- Portable Design: Compact size with a hanging hole and strong suction cup for easy attachment.
- Long Playtime: Up to 8-10 hours of music playback on a single charge.

Figure 3.2: Exploded view illustrating internal components and key features like HD Mic, 4W Stereo, and Bluetooth 5.3.

Figure 3.3: The PRSCFUM S3 speaker demonstrating its strong suction cup for secure attachment to smooth surfaces.
4. Setup
4.1 Charging the Speaker
Before first use, fully charge the speaker. The speaker is powered by an included C-type battery.
- Locate the USB charging port on the speaker.
- Connect the provided USB charging cable to the speaker's charging port.
- Connect the other end of the USB cable to a USB power adapter (not included) or a computer's USB port.
- The LED indicator will show charging status (e.g., red for charging, off or green for fully charged).
- Once fully charged, disconnect the charging cable and ensure the charging port cover is sealed.
4.2 Bluetooth Pairing
Follow these steps to pair your PRSCFUM S3 speaker with a Bluetooth-enabled device.
- Power On: Press and hold the Power button on the speaker until you hear an audible prompt and the LED indicator starts flashing, indicating it's in pairing mode.
- Enable Bluetooth: On your device (smartphone, tablet, etc.), go to the Bluetooth settings and ensure Bluetooth is enabled.
- Select Speaker: In the list of available Bluetooth devices, look for "PRSCFUM S3" (or similar) and select it.
- Confirm Connection: Once paired, you will hear a confirmation sound from the speaker, and the LED indicator will change (e.g., solid blue).
- The speaker will automatically reconnect to the last paired device when powered on, if the device's Bluetooth is active and within range.
5. Operating Instructions
5.1 Basic Controls
- Power On/Off: Press and hold the Power button.
- Play/Pause: Press the Play/Pause button once to play or pause music.
- Volume Up/Down: Press the Volume + or Volume - buttons to adjust the volume.
- Next/Previous Track: Press and hold Volume + for next track, and Volume - for previous track.
5.2 Hands-free Calling
When connected to your smartphone via Bluetooth, you can use the speaker for hands-free calls.
- Answer Call: Press the Play/Pause button once when an incoming call rings.
- End Call: Press the Play/Pause button once during a call to hang up.
- Reject Call: Press and hold the Play/Pause button for 2 seconds to reject an incoming call.
- Redial Last Number: Double-press the Play/Pause button to redial the last number.
5.3 LED Light Modes
The speaker features multiple LED light modes to enhance your listening experience.
- Change Light Mode: Press the Light Mode button (usually marked with a light bulb icon) to cycle through different modes.
- Available modes may include:
- Music Rhythm Light (lights react to music beat)
- Color Breathing Light (colors fade in and out)
- Static Colors (Red, Blue, Green, Purple, Yellow, Gradient)
- Lights Off

Figure 5.1: Illustration of the speaker's beat-driven light show and optional static color modes.
5.4 True Wireless Stereo (TWS) Pairing
You can connect two PRSCFUM S3 speakers together for a true wireless stereo experience.
- Ensure both speakers are fully charged and powered off.
- Power on both speakers. They will enter Bluetooth pairing mode.
- On one of the speakers (this will be the primary speaker), double-press the TWS pairing button (refer to speaker diagram if available, or try the Play/Pause button if no dedicated TWS button). The speakers will attempt to connect to each other.
- Once successfully paired, you will hear a confirmation sound, and the LED indicators on both speakers will synchronize.
- Now, connect your device to the primary speaker via Bluetooth as described in Section 4.2. Both speakers will play audio simultaneously.
- The speakers retain TWS pairing memory for subsequent uses.
6. Maintenance
6.1 Cleaning
- Before cleaning, ensure the charging port cover is securely closed.
- Wipe the speaker with a soft, damp cloth. Do not use abrasive cleaners, alcohol, or chemical solvents.
- For stubborn dirt, a mild soap solution can be used, followed by rinsing with clean water. Ensure the speaker is completely dry before opening the charging port.
6.2 Storage
- Store the speaker in a cool, dry place away from direct sunlight and extreme temperatures.
- If storing for an extended period, charge the speaker to about 50% every few months to preserve battery life.
7. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Speaker does not power on. | Low battery. | Charge the speaker fully. |
| Cannot pair with Bluetooth device. | Bluetooth is off on device; speaker is not in pairing mode; device is out of range. | Ensure Bluetooth is enabled on your device. Put speaker in pairing mode. Move device closer to speaker (within 15m). Clear previous pairings on your device. |
| No sound or low volume. | Volume too low on speaker or device; speaker not connected. | Increase volume on both speaker and connected device. Re-pair the speaker if disconnected. |
| TWS pairing fails. | Speakers are too far apart; incorrect pairing procedure. | Ensure speakers are close to each other. Follow TWS pairing steps carefully. Disconnect any existing Bluetooth connections before TWS pairing. |
| LED lights not working. | Light mode is off; speaker malfunction. | Press the Light Mode button to cycle through modes. If problem persists, contact support. |
8. Specifications
| Model Number | S3 |
| Brand | PRSCFUM |
| Bluetooth Version | 5.3 |
| Wireless Range | Up to 15 meters |
| Waterproof Rating | IPX7 |
| Output Power | 5 Watts |
| Frequency Response | 20 KHz |
| Playtime | 8-10 Hours (approx.) |
| Power Source | Battery Powered (1 C-type battery included) |
| Control Method | Voice, Buttons |
| Dimensions (L x W x H) | Approx. 10 x 10 x 10 cm (4 x 4 x 4 inches) |
| Weight | 358 grams |
| Material | Plastic |
| Special Features | LED Light, Lightweight, Strong Suction Cup, Portable, USB Port, Waterproof |
| Compatible Devices | Compatible with most Bluetooth-enabled devices including iPhone, Samsung Galaxy, Sony Xperia, Xiaomi, Huawei, OnePlus, LG. |
9. Warranty and Support
For warranty information or technical support, please refer to the documentation provided with your purchase or contact PRSCFUM customer service through the retailer where the product was purchased. Please have your model number (S3) and purchase date available.