Bluetooth headphones, Q-SOUND is the one of renewable energy products in the sound system industry. It was created by Stephen, who is an engineering student at the Transylvania Univesity of Brasov. The Q-SOUND is designed with the solar panels for energy source. Besides of the solar, the Q-SOUND is build to overcome the limitations of time use during listening the music which able to run for up to 40 hours.

The Q-SOUND exterior design is more futuristic look with a satin silver finish and the flexible plastic that made from rubber-based materials. The contrast is to provide visual accent on the solar cells and to confer a light look on the design.