Hello @pakyeechan :you hunted a unique Bluetooth speaker.
There are several types of fashionable Bluetooth speakers are available like backpack speakers, levitating speakers and now this Transparent one.

PROS:-

• Unique fashionable design.
• you can stick it on any metal surfaces with its magnetic bottom.
• comes with Bluetooth 4.2
• clearer sound quality.
• light weight, easy to carry on.
• can also connect with the non Bluetooth devices by 3.5 mm Jack.

Cons:-

• not completely waterproof.