Sinn watch 956 the rally leather the 956 range of instrument chronographs is designed to resemble the dashboard of classic automobiles the movement is protected from shock and magnetic field interference 956 traditional rallye chronograph features a number of complications including full chronograph functions a double tachymeter scale measuring from 30 to 60 kmh and from 50 to 500 kmh a power reserve indicator a date window at 3 o clock luminous dial elements transparent case back and