Timing to 1/5 second. 

Timing up to 30 minutes. 

Timing telephone conversations. 

Timing up to 12 hours. 

Tachymeter scale. 

Memento dial (V). 

The dial of this chronograph is fitted with a special reminder dial for noting the time of any given event. An independent setting mechanism for the hands is controlled by the crown (W).

V = Memento dial

W = Setting crown for memento dial