Remax RB-M21

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REMAX RB-M21 Portable IPX5 Waterproof Speaker User Manual

Model: RB-M21

1. Important Safety Information

Please read all instructions carefully before using this product. Retain this manual for future reference.

  • Do not expose the speaker to extreme temperatures or direct sunlight for prolonged periods.
  • Do not disassemble, repair, or modify the speaker. This will void the warranty.
  • Keep the speaker away from medical devices, as it may interfere with their operation.
  • Ensure the charging port cover is securely closed when the speaker is exposed to water to maintain its IPX5 waterproof rating.
  • Clean the speaker with a soft, dry cloth. Do not use harsh chemicals or abrasive cleaners.
  • Dispose of the speaker and its battery responsibly according to local regulations.

2. Package Contents

Verify that all items are present in your package:

  • REMAX RB-M21 Portable Bluetooth Speaker
  • USB Charging Cable
  • User Manual

3. Product Overview

Familiarize yourself with the components and controls of your RB-M21 speaker.

Front view of the REMAX RB-M21 speaker showing control buttons

Image: Front view of the REMAX RB-M21 Portable Bluetooth Speaker, highlighting the control panel with power, volume, and playback buttons.

Controls and Ports:

  • Power Button (●): Press and hold to power on/off. Short press to play/pause music or answer/end calls.
  • Volume Up / Next Track Button (+): Short press to increase volume. Long press to skip to the next track.
  • Volume Down / Previous Track Button (-): Short press to decrease volume. Long press to go to the previous track.
  • Play/Pause / Call Button (►): Short press to play/pause music. Short press to answer/end calls. Long press to reject calls.
  • Charging Port: Located under a waterproof flap, used for charging the speaker.
Side view of the REMAX RB-M21 speaker with a carrying strap

Image: Side view of the REMAX RB-M21 Portable Bluetooth Speaker, showing its compact size and integrated carrying strap, suitable for portability.

4. Setup

4.1 Charging the Speaker

Before first use, fully charge the speaker. Use the provided USB charging cable.

  1. Open the waterproof flap covering the charging port.
  2. Connect the USB charging cable to the speaker's charging port.
  3. Connect the other end of the USB cable to a USB power adapter (not included) or a computer's USB port.
  4. The charging indicator light will illuminate. It will turn off or change color once charging is complete.
  5. Once charging is complete, securely close the waterproof flap to maintain the speaker's IPX5 rating.

4.2 Bluetooth Pairing

Pair your speaker with a Bluetooth-enabled device (e.g., smartphone, tablet, laptop).

  1. Ensure the speaker is fully charged.
  2. Press and hold the Power button (●) for 3 seconds to turn on the speaker. A voice prompt or indicator light will confirm it's in pairing mode.
  3. On your device, enable Bluetooth and search for new devices.
  4. Select "REMAX RB-M21" from the list of available devices.
  5. Once paired, the speaker will indicate a successful connection (e.g., a voice prompt or steady indicator light).
  6. The speaker will automatically reconnect to the last paired device when powered on, if the device is within range and Bluetooth is enabled.

5. Operating Instructions

5.1 Power On/Off

  • Power On: Press and hold the Power button (●) for 3 seconds.
  • Power Off: Press and hold the Power button (●) for 3 seconds.

5.2 Music Playback

  • Play/Pause: Short press the Power button (●).
  • Volume Up: Short press the Volume Up button (+).
  • Volume Down: Short press the Volume Down button (-).
  • Next Track: Long press the Volume Up button (+).
  • Previous Track: Long press the Volume Down button (-).

5.3 Call Handling

  • Answer Call: Short press the Power button (●) when an incoming call rings.
  • End Call: Short press the Power button (●) during a call.
  • Reject Call: Long press the Power button (●) when an incoming call rings.

5.4 IPX5 Waterproof Rating

The RB-M21 speaker features an IPX5 waterproof rating, meaning it is protected against low-pressure water jets from any direction. This makes it suitable for use in environments where it might encounter splashes, such as by a pool or in the shower.

  • Important: Ensure the charging port cover is completely sealed before exposing the speaker to water.
  • Do not submerge the speaker in water. IPX5 rating does not mean it is fully submersible.
  • After exposure to water, wipe the speaker dry with a soft cloth before charging.

6. Maintenance

6.1 Cleaning

To keep your speaker in optimal condition:

  • Wipe the exterior of the speaker with a soft, slightly damp cloth.
  • Do not use abrasive cleaners, alcohol, or chemical solvents, as these may damage the surface.
  • Ensure the speaker is completely dry before charging or storing.

6.2 Storage

When not in use for extended periods:

  • Store the speaker in a cool, dry place, away from direct sunlight and extreme temperatures.
  • Charge the battery at least once every three months to prolong its lifespan.

7. Troubleshooting

ProblemPossible CauseSolution
Speaker does not turn on.Battery is low or depleted.Charge the speaker fully.
Cannot pair with Bluetooth device.Bluetooth is not enabled on device; speaker is not in pairing mode; device is too far.Ensure Bluetooth is on. Turn speaker off and on to re-enter pairing mode. Move device closer to speaker.
No sound or low volume.Volume on speaker or device is too low; speaker is not connected.Increase volume on both speaker and device. Re-establish Bluetooth connection.
Sound distortion.Volume is too high; device is too far; interference.Lower volume. Move device closer. Move away from other electronic devices.

8. Specifications

FeatureDetail
Model NumberRB-M21
BrandRemax
Connectivity TechnologyBluetooth, Wired/Wireless
Speaker TypeBluetooth Speakers
Nominal Output5 - 10 Watt (Max 10 Watts)
Waterproof RatingIPX5
Item Weight0.25 Kilograms (250 g)
ShapeCylinder
Compatible DevicesLaptop, Smartphone, Tablet
ColorBlack

9. Warranty and Support

REMAX products are designed to provide reliable performance. For information regarding warranty coverage, technical support, or service inquiries, please refer to the warranty card included with your product or visit the official REMAX website.

Please retain your proof of purchase for warranty claims.

© 2023 Remax. All rights reserved.

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