Watches featuring a moonphase complication display new moons, first quarters, full moons and last quarters.
Watches featuring a « big date » display an oversized window and have two independent date discs.
The power reserve indicator tells you the time the watch will continue to function. It can either be seen on hand winding or automatic watches.
The date is a small window on the dial which indicates the day of the month (between 1 and 31).
Watches featuring a small seconds have a smaller subcounter, usually located at 6h, which indicates seconds.