IWC(International Watch Company) Schaffhausen Aquatimer reference IW371903. Powered by the IWC Calibre 79320 automatic movement, with chronograph and day/date functions. Ultra-light pure titanium case with sandblast finish. Black dial with yellow accents. Inner rotating 60 minute bezel controlled by a crown at 4 o`clock.
Factory Model Number. IW371903.
IWC Calibre 79320 Automatic, 25 jewels.
Shock absorber device
Straight-line lever escapement
Monometallic balance adjusted to 5 positions
Self-compensating flat balance spring
Hacking seconds mechanism.
12 hr, 30 min, 60 sec registers chronograph. Day/Date calendar, window display.
Pure Titanium. Sandblasted finish. Crown at "4" operates the inner rotating bezel.
Inner rotating 60 minute, operated by separate crown.
Sport style, screw-down (threaded). Factory Logo engraved/embossed.
Sapphire. Anti-Glare treated. Very slight dome profile.
Black color. Luminous hour markers/dots. Yellow accents.
Steel color. Luminous filled.
Pure Titanium. Sandblasted finish. All factory links are in.