It is the standard release Masterpiece Chronograph.
The custom/ in-house movement design was a collaboration between ML and Andreas Strehler.
Its got a nice dial design ( at least I enjoy it a lot). The little dots of lume and the lumed chrono hand shine bright so the chronograph and be used at night.
The elapsed second hand is mounted on a 300 teeth center wheel (thus being able to record down to 1/5 of a second). And because the teeth is so small, the center wheel is actually produced at MIMOTEC using UV-LIGA
Cheers, Mike