Magnus Carlsen is not only now the highest rated player in the world, but like a lot of chess geniuses seems to be a cut above the others when it comes to lightning.
Have a look at him taking apart a couple of super-grandmasters. If you enjoy chess, it's fun to watch him slowly pulling apart his opponents position with three pawns against a bishop.
Even if you don't enjoy chess the second video is a time scramble in which his opponent ends up pretty pissed off.
They sure beat the hell out of that clock. What is the average life expectancy of those gadgets? Do they come with a warranty?
A bit like boxers - made to be hit. But sometimes they get punch drunk it's true - then you get another one. Same thing is true of chess clocks really ;)