A 41.5 mm stainless steel case holds Alpina's AL-710 automatic caliber. This is a self-winding (automatic) movement boasting 42 hours of power reserve. Hours, minutes, seconds and date pointer at 6 o'clock.
Courtesy of Alpina
A sapphire crystal display back provides the viewing window for the Alpina AL-710. This movement measures 30.5 mm in diameter.