Twistones was a concept that I worked on for a course in college called "Design process and sketching" 

I broke down the circuitry of a simple pair of headphones to see if I could use it to add more use to the same product.

I divided the product into three parts:

Frame, Powerbank and speaker cups.

 

The Frame and Powerbank contain the Amplifier and battery circuit for the Headphones and speaker respectively. The speaker cups contain a blue tooth transmittor/receiver and  2x5 watts speaker, which when connected to the frame, acts on lesser power and amplification as compared to the speaker circuit in the powerbank.

The frame can be clipped off

The speakers can then be locked into the powerbank using a clip lock mechanism.