Wireless speakers are already a lot of mobile accessories in the market, but the company  Leedeyeon decided to issue  very creative.

The manufacturer has created a wireless column Cork, which uses empty bottles to enhance the sound. Device is worn on a neck and the sound goes into the bottle, so it increases.

Interestingly, depending on the size and shape of the bottle, you can adjust the bass, volume and sound of Cork.
Cork connected to a smartphone or other device via Bluetooth. One charge is enough for 10 hours of audio playback.
You can order a cork-column on Kickstarter for $ 43.