Sinns 756 watches are exceptionally functional and durable they come with special protection against external influences this timepiece is equipped with valjoux 7750 automatic calibre that performs 28 800 vibrations per hour and has 25 bearing jewels the case is hardened using sinns tegiment technology a dehumidifying capsule is added to increase dial readability and to protect the mechanism the timepiece has a second time zone indicated by a yellow arrow hand additional functionalities