Sinns 756 watches are designed to be especially durable and protected from external influences this timepiece comes equipped with valjoux 7750 automatic calibre that performs 28 800 vibrations per hour and has 25 bearing jewels sinns special dehumidifying technology protects the watch dial from fogging the extreme protection from magnetic fields is another prominent characteristic a yellow arrow hand indicates the timepieces second time zone additional functionalities include a date wind