Audemars Piguet Royal Oak GMT Tourbillon Concept Watches. 44mm x 16.05mm titanium case, sapphire crystal back, screw-locked push pieces and crown, black ceramic bezel, glareproofed sapphire crystal, openworked dial with second time-zone indicator at 3 o’clock, crown position indicator at 6 o’clock, tourbillon at 9 o’clock with black anodized aluminium bridge, white gold Royal Oak hands, and black anodized aluminium flange, manual-winding Audemars Piguet Calibre 2913 movement with tourbillon, GMT 24h, functions selection, hours, and minutes , approximately 237 hours of power reserve, black rubber strap with titanium AP folding buckle. Water resistant to 100 meters.

MOVEMENT:
-Power reserve: 237 hours

CASE:
-Titanium
-Ceramic bezel
-Caseback ring in black PVD-coated titanium
-Diameter: 44 mm
-Thickness: 16.05 mm
-Sapphire crystal caseback
-Water-resistance: 100 Meters

DISPLAY:
-Integrated onto the movement

STRAP:
-Rubber, AP folding clasp in titanium

FUNCTIONS:
-Hours and minutes
-Linear chronograph minute counter with
– central sweep seconds hand
-Power reserve indication
-Selection indicator