Brushed finished 18kt rose gold case & bracelet with polished beveled corners.
Brushed & polished octagon shaped fixed bezel, secured by 8 polished hex-head screws.
Blue dial with AP's signature Grande Tapisserie design pattern. 'Bleu Nuit, Nuage 50" shade of the original model from 1972.
Polished rose gold hands, the hour & minute baton hands with luminous fill.
Applied polished rose gold index hour markers with luminous fill.
Dial flange with fine printed minutes/seconds & fractions of a seconds track.
Date window between 4 & 5 o'clock.
Small seconds sub-dial at 6 o'clock.
Chronograph function:

Column wheel mechanism.
Central seconds counter hand.
30 minute counter sub-dial at 3 o'clock.
12 hour counter sub-dial at 9 o'clock.

Audemars Piguet caliber 2385, beats at 21,600 vph (3Hz), contains 37 jewels & has an approximate power reserve of 40 hours.