Imagen1
Thank you for trusting us and purchasing your new OpenDesign Headphones. We hope you enjoy it.


User Manual

Consult the user manual by clicking here.


Frequently Asked Questions FAQ

  • Can I use the headset while charging the battery?
    This is not possible for safety reasons due to compliance with current CE regulations.

  • How can I force the headphones to turn off?
    Connect the charging cable and the charging cable to a 5V USB power adapter and the headphones will turn off automatically.

  • How do I reset the earphones?
    Disconnect the headphones from any Bluetooth device, press 7 times quickly on the touch control of both headphones simultaneously and they will restart automatically. Put them in the charging case and when you take them out again you can connect them again via Bluetooth.

  • What is the Multipoint function and how does it work? This feature allows you to connect the earphones simultaneously to two devices, such as a Smartphone and a laptop. How do I connect the headphones to two devices? 1) Connect your headphones to your Smartphone via Bluetooth®. 2) Disconnect the Bluetooth® from your Smartphone. 3) Pair the headphones with a second device. 4) Once the headphones are paired with the second device, turn on Bluetooth® on your Smartphone and connect them back to the first device.


Technical Specs

Audio

  • Frequency response: 20 Hz ~ 20 kHz
  • Driver diameter: 40 mm
  • Design: Open

Wireless connectivity

  • 2.4 GHz RF 2.4 GHz USB Dongle Transmitter
  • Bluetooth version 6.0, class 2
  • Working frequency: 2.4 GHz
  • Maximum signal strength: < 20.00 dBm
  • Supports Bluetooth HSP / HFP / A2DP / AVRCP profiles
  • Compatible with SBC / AAC codecs
  • Up to 20 meters range

Hands-free microphone

  • Type: flexible and foldable boom
  • Sensitivity: -38 dB ± 3 dB
  • Frequency range: 100 Hz ~ 10 kHz

Battery

  • Capacity: 400 mAh / 3.7 V
  • Type: lithium polymer
  • Battery life at medium volume: 40 hours*
  • Charging time: 1,5 hours
  • Charging system: USB type C

*This data is approximate. Autonomy depends on the volume selected and the type of music played.

Others

  • Adjustable headband


Safety and maintenance

  • Do not expose the device to shock, dust, moisture or high temperatures.
  • Do not apply corrosive or abrasive cleaning agents to the device.
  • Do not disassemble the device. Any repair must be carried out exclusively by qualified Energy Sistem Technology, S.A. personnel.
  • Be sure to keep the device switched off when not in use and do not leave it for a long period of time with the battery completely discharged.
  • Keep the device and its packaging out of the reach of children and pets to avoid possible accidents.
  • Do not use the device while driving a vehicle.


Prevention of hearing loss

Listening to music at high volume levels for long periods of time can cause permanent hearing damage. To avoid hearing damage, we recommend turning down the volume of the player before starting music playback and then gradually increasing the volume to a comfortable, moderate listening level.


Warranty

You can check the warranty conditions here.