1. Introduction
Thank you for purchasing the Oraolo M91 Portable Bluetooth Speaker. This manual provides essential information for setting up, operating, and maintaining your speaker. Please read this manual thoroughly before using the product to ensure proper function and to maximize your listening experience. The Oraolo M91 is designed for portability, offering clear sound, Bluetooth 5.0 connectivity, and IPX5 water resistance for various environments.
2. Safety Information
- Do not expose the speaker to extreme temperatures, direct sunlight, or open flames.
- Avoid dropping or subjecting the speaker to strong impacts.
- Do not disassemble, repair, or modify the speaker yourself. Contact authorized service personnel if needed.
- Keep the speaker away from water and liquids, despite its IPX5 rating. IPX5 protects against splashes and light rain, but not submersion.
- Use only the provided charging cable or a certified equivalent.
- Clean the speaker with a soft, dry cloth. Do not use abrasive cleaners or solvents.
- Keep out of reach of children.
3. Package Contents
Please check the package for the following items:
- 1 x Oraolo M91 Bluetooth Speaker
- 1 x Micro USB Charging Cable
- 1 x User Manual (this document)
- 1 x 3.5mm Auxiliary Input Cable
4. Product Overview

Image: The Oraolo M91 Portable Bluetooth Speaker, showcasing its grey rugged design, front speaker grille with a geometric pattern, integrated handle, and control panel on the left side. The control panel features distinct buttons for mode, volume/track control, and play/pause.
Control Panel Functions
- Power Button: Press and hold to power on/off.
- Mode Button (M): Press to switch between Bluetooth mode and AUX mode.
- Volume Up / Next Track Button (+ / >>): Short press for Volume Up. Long press for Next Track.
- Volume Down / Previous Track Button (- / <<): Short press for Volume Down. Long press for Previous Track.
- Play/Pause / Call Button (>|| / Phone Icon): Press to Play/Pause music. Press to Answer/End a call. Press and hold to Reject a call.
- LED Indicator: Displays power, charging, and Bluetooth status.
- Microphone: For hands-free calling.
- Charging Port (Micro USB): For connecting the charging cable.
- AUX Input Port (3.5mm): For connecting external audio devices via auxiliary cable.
5. Setup
5.1 Charging the Speaker
Before first use, fully charge the speaker. A full charge typically takes approximately 3-4 hours.
- Connect the Micro USB charging cable to the speaker's charging port.
- Connect the other end of the cable to a USB power adapter (not included) or a computer's USB port.
- The LED indicator will illuminate during charging and turn off or change color when fully charged (refer to specific LED behavior in the full manual if available).
5.2 Powering On/Off
- To Power On: Press and hold the Power button for approximately 2-3 seconds until you hear an audible prompt and the LED indicator lights up.
- To Power Off: Press and hold the Power button for approximately 2-3 seconds until you hear an audible prompt and the LED indicator turns off.
6. Operating Instructions
6.1 Bluetooth Pairing
The speaker will automatically enter Bluetooth pairing mode when powered on for the first time or if no device is connected.
- Ensure the speaker is powered on and in Bluetooth mode (LED indicator will flash, indicating pairing mode).
- Enable Bluetooth on your device (smartphone, tablet, computer).
- Search for available Bluetooth devices and select "Oraolo M91" from the list.
- Once paired, the speaker will emit an audible confirmation, and the LED indicator will stop flashing and remain solid.
- The speaker will automatically reconnect to the last paired device when powered on, if the device's Bluetooth is active and within range.
6.2 Auxiliary Input (AUX) Mode
Use the 3.5mm auxiliary input for devices without Bluetooth capability.
- Connect one end of the 3.5mm auxiliary cable to the speaker's AUX input port.
- Connect the other end of the cable to the audio output jack of your external device.
- Press the 'M' (Mode) button on the speaker to switch to AUX mode.
- Audio will now play through the speaker. Control playback and volume from your connected device.
6.3 Stereo Pairing (TWS Function)
The Oraolo M91 supports True Wireless Stereo (TWS) pairing, allowing you to connect two M91 speakers for a stereo sound experience.
- Ensure both Oraolo M91 speakers are powered on and not connected to any Bluetooth device.
- On one of the speakers (this will be the primary speaker), press and hold the Play/Pause button for approximately 3-5 seconds.
- The speakers will attempt to pair with each other. You will hear an audible confirmation once TWS pairing is successful.
- Once paired, the LED indicator on the primary speaker will flash, indicating it is ready to pair with your device. The secondary speaker's LED will remain solid.
- Enable Bluetooth on your device and select "Oraolo M91" from the list. Only one "Oraolo M91" will appear.
- Both speakers will now play audio in stereo.
6.4 Hands-Free Calling
With a paired smartphone, you can use the speaker for hands-free calls.
- Answer Call: Press the Play/Pause / Call button once.
- End Call: Press the Play/Pause / Call button once during a call.
- Reject Call: Press and hold the Play/Pause / Call button for approximately 2 seconds.
7. Maintenance
- Cleaning: Wipe the speaker with a soft, dry, lint-free cloth. Do not use liquid cleaners, aerosols, or solvents.
- Storage: When not in use for extended periods, store the speaker in a cool, dry place away from direct sunlight and extreme temperatures.
- Battery Care: To prolong battery life, avoid fully discharging the battery frequently. Charge the speaker regularly, even if not in use.
8. Troubleshooting
| Problem | Solution |
|---|---|
| Speaker does not power on. | Ensure the battery is charged. Connect the speaker to a power source using the Micro USB cable. |
| Cannot pair with Bluetooth device. | Ensure the speaker is in pairing mode (flashing LED). Turn off and on Bluetooth on your device. Move the speaker closer to your device. Clear previous pairings on your device and try again. |
| No sound or low volume. | Increase volume on both the speaker and your connected device. Ensure the speaker is not muted. Check if the correct input mode (Bluetooth/AUX) is selected. |
| Sound distortion. | Reduce the volume on your device or the speaker. Ensure the speaker is not too far from the Bluetooth source. |
| TWS pairing fails. | Ensure both speakers are M91 models and are not connected to any other Bluetooth device before initiating TWS pairing. Power cycle both speakers and try again. |
9. Specifications
| Feature | Detail |
|---|---|
| Model Name | M91 |
| Brand | Oraolo |
| Connectivity Technology | Bluetooth 5.0 |
| Speaker Maximum Output Power | 24 Watts (2x12W) |
| Audio Output Mode | Stereo |
| Water Resistance Rating | IPX5 |
| Battery | 4000mAh Lithium Ion (up to 20 hours playtime) |
| Wireless Range | Up to 100 feet (30 meters) |
| Product Dimensions | 30.4 x 16.2 x 16.8 cm |
| Weight | 1.42 kg |
| Material | Metal (grille), Rubber (exterior) |
| Compatible Devices | Smartphone, Tablet, other Bluetooth-enabled devices |
10. Warranty and Support
Oraolo provides a 12-month warranty for the M91 Portable Bluetooth Speaker from the date of purchase. This warranty covers manufacturing defects and ensures the product meets its specified performance standards under normal use.
For technical support, warranty claims, or customer service inquiries, please contact Oraolo's professional support team. Efficient and satisfactory customer service is available 7 days x 24 hours.
Please refer to the official Oraolo website or your purchase documentation for specific contact details.
11. Video Resources
No official product videos from the seller are available for embedding at this time. Please refer to the product page for any available visual guides or demonstrations.
