amanico[JLC Moderator]
400227
Jaeger Lecoultre Master Compressor Extreme World Chronograph.
Born in the mid 2000's, there were some cool versions.
The normal one:

The Boutique Edition ( Credit picture: Our dear Jester ).

A platinum one, for Singapore ( Credit Christies )

And the last one, the Inverssor.
Big and chunky, but friendly and not lacking charm...
Best,
Nicolas