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Thank you for trusting our company and buying the new Music Box 2+. We hope you enjoy the product.

This portable speaker allows you to enjoy your music like never before via Bluetooth 5.0 and TWS to pair two units simultaneously. It features a microSD MP3 player, FM radio to listen to your favorite radio stations, an audio-in and hands-free function to answer your calls. Take your music with you wherever you go thanks to its portable battery with a 14-hour battery life.

Before you start using your Music Box 2+ we strongly recommend reading this manual to get used to it.

Care and maintenance

  • Do not expose your Music Box 2+ to humidity or heat.

  • Do not use neither corrosive nor abrasive cleaning products.

  • Do not disassemble the device. All repair works should be carried out exclusively by qualified staff of Energy Sistem Technology, S.A.

  • Turn off your Music Box 2+ when you are not using it. Do not let it completely discharged for a long time.


General features

  • This portable speaker has been conceived to fit into your pocket so that you can take it with you easily.

  • It features Bluetooth 5.0 connection to listen to the music of your devices wirelessly.

  • The True Wireless Stereo system allows you to synchronize two speakers and play music simultaneously with twice as much power.

  • It features an MP3 player to play files from external microSD cards (up to 128 GB).

    • Enjoy your FM radio stations with the Music Box 2+ and its 50 preset stations.
  • You can also plug any music device into the speaker audio-in.

  • Answer calls quickly and easily thanks to the hands-free function.

  • This stereo speaker features 6 W power and Bass Membrane to enhance bass and provide balanced and high-quality sound.

  • Enjoy all the advantages of this portable speaker thanks to the rechargeable battery, which provides 14 hours of battery life.

Technical specifications


  • 2.0 system
  • Power: 6 W
  • 2 x 40 mm full range speakers
  • 1 passive radiator at the front
  • Frequency response: 80 Hz ~ 18 kHz
  • S/N ratio: >80 dB


  • Bluetooth 5.0, class II
  • Supported protocols: HSP / HFP / A2DP / AVRCP
  • Up to 20 m distance range
  • TWS (True Wireless Stereo) technology


  • Music Box 2
  • Music Box 2+


  • Sensitivity: -42 dB ± 3 dB


  • 3.5 mm mini jack stereo audio-in (AUX)


  • Frequency band: 87.5 ~ 108 MHz
  • Automatic tuning


  • MicroSD decoder: reads MP3/ WAV files from external storage units (up to 128 GB) with FAT/ FAT32 file system.


  • Capacity: 800 mAh
  • Type: lithium polymer
  • Battery life: 14 hours*
  • Charging port: microUSB
  • Charging time: 2 hours

*This value is approximate. Battery life depends on the selected volume level and type of music.

Product content

  • Music Box 2+ speaker
  • Audio cable
  • USB cable
  • Strap

General overview

  1. On/ Off
  2. Select playback mode
  3. Volume -/ Back
  4. Play/ Pause/ Calls/ TWS
  5. Volume +/ Next
  6. LED indicator
  7. Microphone
  8. MicroUSB charging port
  9. 3.5 mm mini jack audio-in
  10. MicroSD slot


Switching on and off the device

Press and hold On/ Off (1) for 2 seconds to switch on the device. You will see that the LED indicator (6) turns on. At this point, you will also hear a confirmation sound.

Press and hold On/ Off (1) for 2 seconds to switch off your device. You will hear a confirmation sound. At this point, the LED indicator (6) switches off.

Playback modes

To select the preferred playback mode, press repeatedly Select playback mode (2), until you find the mode you want for your music. There are several modes available: Bluetooth, FM radio, microSD and 3.5 mm mini jack stereo audio-in (AUX) mode.

To start, pause or resume playback, press Play/ Pause/ Calls/ TWS (4).

Press Volume -/ Back (3) and Volume +/ Next (5) to adjust the volume level according to your preferences. You will hear a warning sound when reaching the maximum and minimum volume levels.

If you want to hear another song, press and hold Volume -/ Back (3) or Volume +/ Next (5) for two seconds, until you find it.

Bluetooth (BT)

Press Select playback mode (2) to find and select the Bluetooth mode. You will hear a sound and the LED indicator (6) will flash blue. Enable Bluetooth on your smartphone or tablet and select your "Music Box 2+". The devices will be paired without codes. Once the connection has been established, you will hear a confirmation sound and the LED indicator (6) will light up permanently.

At this point, you will be able to start music playback on your smartphone or tablet. The Bluetooth wireless connection range is up to 20 metres.

You can also manage playback from the speaker. To do so, use the Play/ Pause/ Calls/ TWS (4), Volume -/ Back (3) and Volume +/ Next (5) buttons.

Your Music Box 2+ connects to the last paired device automatically when you switch it on once again, provided that the Bluetooth connection on your smartphone or tablet is enabled. Press and hold Play/ Pause/ Calls/ TWS (4) for 2 seconds to disconnect the current device and pair it with a new one.

TWS (True Wireless Stereo)

This technology makes it possible to wirelessly pair another Music Box 2+ to get twice as much power and create a stereo sound system made up of two different channels: left and right.

Switch on both Music Box 2+ and select Bluetooth mode on each of them. Pair your smartphone or tablet with one of the speakers. Press and hold Play/ Pause/ Calls/ TWS (4) on the other speaker to pair them and start enjoying music with TWS technology.

Playback can be managed from both speakers indistinctly.

Press and hold Play/ Pause/ Calls/ TWS (4) to disable the TWS function.

FM radio

The LED indicator (6) lights up green when selecting the FM radio mode. Once selected, you can start a search of FM radio stations. To do so, press and hold Select playback mode (2) for two seconds. At this point, the LED indicator will flash green. The process may take a few minutes. Once the search has been completed, press and hold Volume -/ Back (3) or Volume +/ Next (5) for two seconds to select the radio station you want to hear from all saved radio stations.

Press Volume -/ Back (3) or Volume +/ Next (5) to adjust the volume level. You may also mute and unmute the sound of the radio. To do so, press *Play/ Pause/ Calls/ TWS (4).

If you place the speaker somewhere else, you will have to carry out a new search to obtain a proper radio wave reception.

MicroSD player

The device plays .mp3 and .wav files from microSD cards (up to 128 GB). Once the microSD card has been inserted into the MicroSD slot (10), the LED indicator (6) starts flashing. This means that the device is reading the memory card and the contents will play automatically after a few seconds.

If you switch off the speaker, the internal memory will save the moment where you paused playback. Playback will resume and the last song you listened to will be played when you switch on the speaker once again.

Press and hold Volume -/ Back (3) or *Volume +/ Next (5) for 2 seconds to move to the next or previous song.

If you prefer to switch to another folder, press and hold Select playback mode (2) for two seconds.

Press and hold repeatedly Play/Pause/Calls/TWS (4) for two seconds to choose between Shuffle mode, Repeat one song and sequence playback.

The root folders and files of your microSD cards will be read in chronological order and the songs included in your folders in alphabetical order.

Here you have a diagram of the reading order:


Auxiliary audio input (AUX)

It is also possible to enjoy your Music Box 2+ using the 3.5 mm mini jack audio-in (9) located on the back of the device. Plug your external device using the provided 3.5 mm mini jack audio cable. When you connect the audio cable, your Music Box 2+ enables the Audio-in mode automatically.

IMPORTANT: It is not possible to manage music playback from the speaker while using this mode. You will have to manage playback from the connected music player.

Call control (hands-free function)

Once the speaker and your smartphone are paired, you will be able to answer incoming calls from the speaker itself.

When receiving a call, the song you are listening to stops and the ringing tone sounds instead. Press Play/ Pause/ Calls/ TWS (4) to answer an incoming call. Press it once again to hang up. The song will resume automatically.

Keep a distance of 30-50 cm from the speaker for a proper voice reception. The Microphone (7) is located on the front part of the speaker, next to the LED indicator (6).

Charging the battery

When the battery level is below 5%, you will hear a sound to remind you to charge it. Plug the microUSB end of the provided USB cable into the MicroUSB charging port (8) of your Music Box 2+ and the other USB end to any device with a USB charging port to provide energy (PC, USB wall charger, car charger, etc.) to charge the battery. The LED indicator (6) lights up red and switches off once the charging process has been completed. The charging time is approximately 2 hours.


  • Use a 5 V 1 A or 5 V 2 A AC/DC power adapter.
  • Do not leave your Music Box 2+ completely discharged for a long time.


To force the device to shut down, press the hidden reset button located inside the 3.5 mm mini jack audio-in (9).

Note: Avoid using metallic objects when performing the reset.



Energy Sistem Technology, S.A. is liable for any lack of conformity that exists at the time the goods are purchased during a period of 36 months. Batteries are excluded from the 36 month warranty, having a warranty period of 24 months.

This warranty covers any defects in workmanship or materials and does not cover any product failure due to accidents, misuse or alteration made by an unauthorized person.

The special 36-month warranty is valid for the European Union. For other countries please refer to your specific legislation or your local distributor.

Warranty procedure

Please visit and select your product to view the FAQ (Frequently Asked Questions), user manual, quick guide, drivers and updates available as well as to submit a query to our Technical Support or manage the warranty.

You may also contact the distributor that sold the product by presenting the purchase receipt or invoice.

Important: This warranty does not cover any damage or loss of data stored on warranty products. Therefore, Energy Sistem's Technical Support will not assume any loss of the above mentioned information. In this respect it is recommended that you make a backup of your data and remove any personal data from the product's internal memory before you send it or send it only with the original data.

Trademarks. All company, brand and product names are trademarks or registered trademarks of their respective companies. Specifications are subject to change without notice.

© 2019 by Energy Sistem Technology, S.A. All rights reserved.

Declaration of conformity

Issuer's name: Energy Sistem Technology, S.A. - CIF: A53107488
Address: C/ Calpe, 1 - 03509 Finestrat - Alicante (Spain)
Tel: + 34 966 830 324

We declare under our own exclusive responsibility that the product

Description: Portable wireless speaker
Brand: Energy Sistem
Model: Music Box 2+
Manufacturer: Energy Sistem Technology, S.A.
Manufacturing country: China

referred to in this declaration is in compliance with the essential norms and standards

  • EN 300 328 V2.1.1: 2016-11
  • EN 303 345 V.1.1.7:2017-03
  • EN 301 489-1 V2.0.0: 2017-03
  • EN 301 489-17 V3.2.9: 2017-03
  • EN 60065:2014+A11: 2017
  • EN 62479:2010
  • EN 50663:2017
  • EN 62368-1:2014+A11:2017

in conformity with the provisions of the Directive 2014/53/EU of the European Parliament and of the Council of 16th April 2014.

Finestrat, 1st April 2021.

Miguel Ángel Aragüez García
Innovation and Technology Director