* Fully Automatic movement.
* Hack mechanism - second hand stops when crown is pulled out to adjust time.
* Chronograph button rotates inner bezel on dial.
* Fully functional Day-Month-Military Time Chronograph dials.
* A LANGE & SOHNE  Quick-set Date Window.
* Beautiful polished stainless casing finish.
* A LANGE & SOHNE  See through back.
* all the appropriate A LANGE & SOHNE markings in all the appropriate places, including the clasp, dial, back.