At this week's Consumer Electronics Show in Las Vegas, technology brand TDM is presenting a "first-of-its-kind" audio device that transforms from a pair of headphones into a Bluetooth speaker with a simple twist. TDM, which is an acronym for Tomorrow Doesn't Matter, describes the Neo headphones as the "first and only" headphones that twist to change function. The two-in-one audio system is built around four independently tuned 40-millimetre drivers, with two inward-facing headphone drivers and