This sinn chronograph has been created with functionality being the main emphasis the design of the dial itself hints about the cockpit instruments that pilots use the timepiece is equipped with valjoux 7750 automatic calibre that performs 28 800 vibrations per hour and has 25 bearing jewels sinns special dehumidifying capsule is added to the construction a day and date window is positioned at the 3 oclock mark the watch comes with various other useful functionalities including a captive