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Thank you for trusting our company and buying the new Clock Speaker 4 Wireless Charge. Before you start using the product, we strongly recommend reading this manual to get used to it.

Care and maintenance

Please take into account the following considerations to avoid product damage:

  • 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 the device when you're not using it. Do not let it completely discharged for a long time.

Technical specifications


  • Sound system: 2.0 stereo system
  • Power: 10 W
  • 2 x full range speakers: 5 W, 2"
  • Passive radiators: 2 membranes
  • Frequency response: 50 Hz ~ 18 kHz
  • THD < 1%
  • S/N ratio: > 90 dB


  • 2 alarms that may be set separately
  • 5 alarm sounds to choose from: Nature, Beep, Fantasy, FM radio or external storage units
  • Gradually increasing alarm volume
  • Snooze function


  • Bluetooth 5.0, class 2
  • Frequency band: 2.4 GHz
  • Maximum output signal: <20.00 dBm
  • Supported Bluetooth protocols: HSP / HFP / A2DP / AVRCP
  • Up to 10 m distance range
  • Hands-free function


  • 3.5 mm jack input (analogue stereo input)


  • 128 GB USB and microSD MP3 player
  • Supported formats: MP3, WAV, WMA
  • Supported file system: FAT32 and exFAT
  • Change folder feature and shuffle mode


  • Built-in antenna
  • FM frequency band: 87.5 ~ 108 MHz
  • Auto search function with 50 presets


  • Capacity: 2000 mAh/ 3.7 V
  • Type: Li-Ion
  • Battery life at medium volume level: 9 hours*
  • Battery life in clock mode at medium brightness level: 22 hours*
  • Charging time: 3 hours
  • Charging port: microUSB

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


  • 5 W Qi-standard wireless charger
  • High definition LED display
  • Timer with auto turn-off function

Product content

  • Clock Speaker 4 Wireless Charge
  • Audio cable
  • USB charger
  • MicroUSB charging cable

General overview

  1. Change mode
  2. Back
  3. Next
  4. Snooze / Display brightness / Timer
  5. Time / Display off
  6. Alarm 1
  7. Alarm 2
  8. Volume knob / Play and pause / Enable wireless charging
  9. Display
  10. Speakers
  11. Wireless charging dock
  12. Power switch
  13. Charging port
  14. 3.5 mm mini-jack audio-in
  15. MicroSD card slot
  16. USB port


Switching on and off the device

Slide the Power switch (12) to the left to switch on the device. At this point, the display lights up. You will also hear a confirmation sound. Slide the power switch to the right to switch it off.

IMPORTANT: Take into account that the alarms won't sound if the device is off.

You can alternatively turn off the device display by pressing Display off (5). If you want to turn it on, press the very same button once again. This way, the speaker continues working normally. Although the display is off, you can go on listening to music and the alarms will sound at the time set. Besides, the display lights up automatically when the alarm sounds.

Charging the battery

When the battery level is below 10%, you will hear a sound to remind you to charge it. At this point, the low battery icon appears on the display. Plug the adapter and the cable into the Charging port (13) of your Clock Speaker 4. Connect the other cable end to the wall socket. The indicator next to the charging port lights up red and switches off once the charging process has been completed. The charging time is approximately 3 hours.

Approximate battery life:

The battery life of your Clock Speaker 4 depends on the selected volume level, the type of music and the display brightness level. Please take a look at the information below to find out more about the approximate battery life of your device:

  • Battery level in Bluetooth mode at medium brightness level:
  • Minimum volume level (25%): 10 hours
  • Medium volume level (50%): 9 hours
  • High volume level (75%): 6 hours
  • Maximum volume level (100%): 2 hours

In Clock mode when not playing music:

  • Display off: 5 days
  • Minimum brightness level: 3 days
  • Medium brightness level: 22 hours
  • Maximum brightness level: 10 hours

Playback modes

Press Change mode (1) to select one of the following playback modes:

Clock - Bluetooth - MicroSD - USB - FM radio - Line-in

Clock and alarms

By default, your Clock Speaker 4 enables Clock mode when you switch it on. This mode shows the time and consumes less power than other modes.

Setting the time

To set the time, press and hold Time (5) and you will see the time flashing. You can set the time regardless of the selected mode. Press Next (3) and Back (2) to select the preferred hour. Press Time (5) briefly to set the minutes.

Once the time is set, press and hold Time (5) to exit setup and save changes.

Setting an alarm

Your Clock Speaker 4 has 2 alarm programmes that can be set separately. Press the alarm button 6 or 7 to set the first or second alarm. Repeat the steps you followed to set the time.

In the third step, you can select the alarm sound among the 3 that come by default (Nature, Beep and Fantasy). You can choose between your microSD cards/USB sticks* and FM radio as well. Press and hold one of the alarm buttons (6 or 7) once again to save changes.

To activate or deactivate the desired alarm, press briefly the alarm button 6 or 7. Once activated, the alarms will sound every day at the set time. To turn them off, press the corresponding button.

* The alarm plays the music from the currently inserted storage unit or the last used USB stick or microSD card at the set time, provided they are still connected.

Turning off the alarm. Snooze function

The volume of the alarm will increase gradually. Press any Alarm button (6 or 7) to turn it off and hear it once again the next day. To repeat the alarm after five minutes, press Snooze (4).

If you don't stop the alarm manually, it will stop sounding after a few minutes. From that moment on, the alarm sounds every 5 minutes. This happens 3 times and then it stops. The alarm sounds once again the next day.


Once Bluetooth mode is enabled, press and hold Change mode (1) for 2 seconds to start searching for Bluetooth devices. Access the list of available devices on your smartphone or tablet. Once there, select "Clock Speaker 4". The devices will be connected without codes. Once the connection has been established, you will hear a confirmation sound.

At this point, you will be able to start music playback on your smartphone or tablet. Press Next (3), Back (2) and Play and pause (8) to manage music playback from the speaker.

Your speaker saves the last connected device and pairs with it automatically when you turn on the speaker once again. Press and hold once again Change mode (1) for 2 seconds to start a new Bluetooth search and pair your speaker with a different smartphone or tablet.

FM radio

Once FM radio mode is enabled, press and hold Change mode (1) for 2 seconds to start searching for FM radio stations. The process may take a few minutes. Once the search has been completed, press Next (3) or Back (2) to select the radio station you want to hear from all saved radio stations.

If you place the speaker somewhere else, you will have to carry out a new search to obtain a proper radio wave reception. Your Clock Speaker 4 saves the last selected radio station when you turn it off and on once again.

IMPORTANT: The wireless charging system interferes with the radio signal. Therefore, you may not be able to enjoy your favourite radio stations while charging a device wirelessly.

MicroSD and USB player

Play MP3, WAV and WMA files from your USB sticks or microSD cards (up to 128 GB). The contents play automatically a few seconds after inserting the storage unit.

If you turn off the speaker or remove the storage unit, the internal memory will save the moment where you paused playback. If you connect the same removable storage unit once again, music playback will resume and the last song you listened to will be then played.

Press Next (3) or Back (2) to switch to the next or previous track. The folders and files stored on your removable storage units will be read in chronological order.

Browsing folders

Press Next (3) or Back (2) for 2 seconds to switch to the next or previous folder stored on your stick or card.

Random playback

Press and hold Change mode (1) for 2 seconds to enable shuffle mode. The word RAND appears on the display when this mode is enabled. If you disable this mode, the word ALL appears.

Auxiliary audio input

Your Clock Speaker 4 also features a 3.5 mm mini-jack audio-in (14) to plug your external devices using the provided audio cable.

Important: You won't be able to manage music playback from the speaker while using this mode. To manage playback functions you will have to use the connected music player instead.

Charging a device wirelessly

You can use wireless charging technology to charge the battery of your Qi-compatible devices. To enable this function, press and hold the Volume knob (8) until you see a blue and red light glowing on the top part of the device. The light glows blue when the charging dock is ready.

Place the device wireless receiver on the Clock Speaker 4 transmitter. You will find it in the upper centre of the device, to the left of the blue light. At this point, the charging process starts and stops when the device is fully charged.

IMPORTANT: Once the device is fully charged, we recommend disabling this function to reduce power consumption and improve FM radio reception.


You can activate this feature in any mode except for Clock mode. To do so, press Snooze (4) several times until reaching the desired time (30, 60, 120 and 180 minutes). When the selected time has elapsed, the music stops automatically and the Clock Speaker 4 returns to Clock mode.

Press Snooze (4) until you see OFF appear on screen to deactivate the timer.

Display brightness

You can adjust the display brightness according to your needs. To do so, press and hold Snooze (4) until reaching the desired brightness level. There are 3 brightness levels available.

If you need to, you can also turn off the screen completely. To do so, press Display off (5). If you want to turn it on, you will only have to press the very same button once again. The display lights up automatically when an alarm sounds.



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 internal memory before you send it or send it only with the original data. Specifications are subject to change without notice.

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.
Address: C/ Calpe, 1 - 03509 Finestrat, Alicante (Spain)
Tel: +34 966 830 324
CIF: A53107488

We declare under our own exclusive responsibility that the product:

Description: Bluetooth speaker with wireless charging system
Brand: Energy Sistem
Model: Clock Speaker 4 Wireless Charge
Manufacturer: Energy Sistem Technology, S.A.
Manufacturing country: China

referred to in this declaration is in compliance with the following European Union directives:

  • Directive 2014/53/EU (RED) of 16th April 2014
  • Directive 2014/30/EU (EMC) of 29th March 2014
  • Directive 2014/35/EU (LVD) of 26th February 2014

and essential norms and standards

  • EN 62479:2010
  • EN 62311:2008
  • EN 60950-1:2006+A11:2009+A1:2010+A12:2011+A2:2013
  • EN 301 489-17 V3.2.0 (2017-03)
  • EN 301 489-3 V2.1.1 (2017-03)
  • EN 301 489-1 V2.2.0 (2017-03)
  • EN 300 328 V2.2.0 (2017-11)
  • EN 303 417 V1.1.1 (2017-09)
  • EN 303 345 V1.1.7 (2017-03)
  • EN 55032:2015
  • EN 61000-3-2:2014
  • EN 61000-3-3:2013
  • EN 55035:2017
  • IEC 60950-1:2005
  • EN 50564:2011
  • EN 62087:2012

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

Finestrat, 01st May 2019


Javier Álvarez Rodríguez
Innovation and Technology Director