This 103 sinn watch is designed to resemble the cockpit instruments that pilots use functionality is of key importance to this model this timepiece is equipped with valjoux 7750 automatic calibre that performs 28 800 vibrations per hour and has 25 bearing jewels sinns dehumidifying technology is used to increase readability and to protect the mechanism a date window is positioned at the 3 oclock mark additional functionalities include captive pilots bezel with minute ratcheting a second