He also had to master 3-D.

NEWYORKER: Show The Monster

That, however, is the only time in the movie that Cameron uses 3-D to conjure a comin'-at-ya View-Master effect.

CNN: Review: 'Titanic 3D' is a work of art

Others will condemn him for losing what he referred to as a game of chess to a master tactician - President Sarkozy of France - who'd always argued that Britain had no role influencing a currency they'd chosen to stay out of.

BBC: Did Europe call Cameron's bluff?

Similar to any DSS system, one of the Vertus dongles (the right channel, in this case) acts as the master to receive the stereo stream from a Bluetooth source, and then it'd throw the left-channel stream to the other dongle.

ENGADGET