Sinn watch 6100 classic 4n leather this classical watch puts emphasis on minutes a single central hand is available to mark minutes while the hour information is provided through a separate sub dial this watch is equipped with sz 04 hand wound movement that performs 18 000 vibrations per hour and has 17 bearing jewels this sinn watches traditional regulateur watch is equipped with electroplated and uv resistant dial appliques attached by hand high and low pressure resistance transparent