1. Introduction
Thank you for choosing the Xuevcn Q90 Bluetooth 5.3 Shower Speaker. This speaker is designed to provide a high-quality audio experience in various environments, including bathrooms, parties, and outdoor settings, thanks to its IP7 waterproof rating and robust features. It combines advanced Bluetooth connectivity, vibrant RGB lighting, and a convenient time display, all in a compact and portable design.

Figure 1.1: Xuevcn Q90 Bluetooth Shower Speaker
2. What's Included
Please check the package contents to ensure all items are present:
- 1 x Xuevcn Q90 Bluetooth Speaker
- 1 x User Manual (this document)
- 1 x Type-C Charging Cable
- 1 x Suction Cup
3. Setup Guide
3.1 Charging the Speaker
Before first use, fully charge the speaker. Connect the provided Type-C charging cable to the speaker's charging port and the other end to a USB power adapter (not included) or a computer's USB port. The LED display will indicate the battery level. A full charge takes approximately 1.5 hours and provides up to 8 hours of playtime at 50% volume.

Figure 3.1: Charging and Battery Life
3.2 Powering On/Off
- Power On: Press and hold the Power button (⏻) for 3 seconds. You will hear an audible prompt, and the LED display will light up.
- Power Off: Press and hold the Power button (⏻) for 3 seconds. You will hear an audible prompt, and the speaker will turn off.
3.3 Bluetooth Pairing
The speaker will automatically enter Bluetooth pairing mode when powered on for the first time or if no device is connected. The Bluetooth icon on the display will flash.
- Ensure your device (smartphone, tablet, PC) has Bluetooth enabled.
- Search for Bluetooth devices and select "Q90" from the list.
- Once connected, you will hear a confirmation sound, and the Bluetooth icon on the speaker's display will stop flashing.
The speaker supports Bluetooth 5.3 for a stable and fast connection with most Bluetooth-enabled devices (iOS 9.0/Android 5.0 or later, Bluetooth 4.0 or higher).
3.4 True Wireless Stereo (TWS) Pairing (Optional)
You can pair two Q90 speakers together for a stereo surround sound experience.
- Ensure both Q90 speakers are powered on and not connected to any other Bluetooth device.
- On one speaker (this will be the primary speaker), double-press the Power button (⏻). The speaker will enter TWS pairing mode.
- The two speakers will automatically connect to each other. You will hear a confirmation sound once TWS pairing is successful.
- Now, connect your device to the primary speaker via Bluetooth as described in section 3.3. Both speakers will play audio in stereo.

Figure 3.2: True Wireless Stereo Pairing
3.5 Attaching the Suction Cup
The speaker comes with a powerful, removable suction cup for easy attachment to smooth surfaces like bathroom walls, mirrors, or glass. Ensure the surface is clean and dry before attaching for optimal adhesion.
4. Operating Instructions
4.1 Button Functions
The speaker features intuitive button controls on its top panel:
| Button | Function (Short Press) | Function (Long Press) |
|---|---|---|
| ⏻ (Power/Play/Pause) | Play/Pause music, Answer/End call | Power On/Off, Reject call, Enter TWS pairing (double press) |
| M (Mode) | Switch between Bluetooth/Aux modes (if applicable) | N/A |
| + / ⏴ (Volume Up/Next Track) | Next track | Volume Up |
| - / ⏵ (Volume Down/Previous Track) | Previous track | Volume Down |
| ☀ (Light Mode) | Cycle through RGB light modes | Turn RGB lights On/Off |
4.2 RGB Light Modes
The speaker features seven different color-changing themes and six lighting colors. Short press the Light Mode button (☀) to cycle through the available light effects. Press and hold the Light Mode button to turn the RGB lights on or off.

Figure 4.1: Colorful RGB Light Show
4.3 Time Display
The high-definition digital display shows the current time and battery level. The time display is automatic and cannot be manually set by the user. It is typically synchronized via the connected Bluetooth device or an internal clock.
4.4 Hands-Free Calling
With its built-in microphone, the Q90 speaker allows for hands-free calls when connected to your smartphone.
- Answer Call: Short press the Power/Play/Pause button (⏻).
- End Call: Short press the Power/Play/Pause button (⏻).
- Reject Call: Long press the Power/Play/Pause button (⏻).
5. Maintenance and Care
5.1 IPX7 Waterproof Rating
The Xuevcn Q90 speaker is IPX7 waterproof, meaning it can be submerged in water up to 1 meter (3.3 feet) for up to 30 minutes. This makes it ideal for use in showers, by the pool, or at the beach. Ensure the charging port cover is securely closed before exposing the speaker to water.

Figure 5.1: IPX7 Waterproof Feature
5.2 Cleaning
To clean the speaker, wipe it with a soft, damp cloth. Do not use harsh chemicals or abrasive cleaners, as these may damage the speaker's surface or waterproof seals. Ensure the speaker is dry before charging.
5.3 Storage
When not in use for extended periods, store the speaker in a cool, dry place away from direct sunlight and extreme temperatures. It is recommended to charge the speaker at least once every three months to maintain battery health.
6. Troubleshooting
If you encounter any issues with your Xuevcn Q90 speaker, please refer to the following common problems and solutions:
- Speaker does not power on:
- Ensure the speaker is fully charged. Connect it to a power source and try again after 15-30 minutes.
- Press and hold the Power button (⏻) for at least 3 seconds.
- Cannot pair with Bluetooth device:
- Ensure the speaker is in pairing mode (Bluetooth icon flashing).
- Make sure Bluetooth is enabled on your device and it is within 15 meters (49 feet) of the speaker.
- Forget or remove "Q90" from your device's Bluetooth list and try pairing again.
- Restart both the speaker and your Bluetooth device.
- Ensure no other devices are currently connected to the speaker.
- No sound or low sound:
- Increase the volume on both the speaker and your connected device.
- Ensure the speaker is properly connected via Bluetooth.
- If using TWS, ensure both speakers are paired correctly and your device is connected to the primary speaker.
- Time display is incorrect or cannot be set:
- The time display on the Q90 speaker is automatic and cannot be manually adjusted. It typically synchronizes with the time from the connected Bluetooth device. Ensure your connected device's time is correct.
- RGB lights are not working:
- Short press the Light Mode button (☀) to cycle through modes.
- Long press the Light Mode button (☀) to ensure the lights are not turned off.
7. Specifications
| Feature | Specification |
|---|---|
| Model Name | Q90 |
| Bluetooth Version | 5.3 |
| Wireless Range | Up to 15 meters (49 feet) |
| Waterproof Rating | IPX7 |
| Speaker Output Power | 5 Watts |
| Speaker Size | 40 Millimeters |
| Battery Capacity | 1000 mAh Lithium Polymer |
| Playtime | Up to 8 hours (at 50% volume) |
| Charging Time | Approx. 1.5 hours |
| Product Dimensions | 0.39"D x 0.39"W x 0.39"H (approx. 10mm x 10mm x 10mm) |
| Item Weight | 11.3 ounces |
| Included Components | Speaker, User Manual, Suction Cup, Type-C Charging Cable |
8. Warranty and Support
8.1 Limited Warranty
The Xuevcn Q90 Bluetooth Shower Speaker comes with a limited warranty. Please refer to the warranty card included in your product packaging for specific terms and conditions. This warranty typically covers manufacturing defects and malfunctions under normal use.
8.2 Customer Support
For any questions, technical assistance, or warranty claims, please contact Xuevcn customer support. Contact information can usually be found on the product packaging or the official Xuevcn website. Please have your model number (Q90) and purchase details ready when contacting support.