Tissot Heritage Silver Dial Men 42mm Dial Colour:Silver At its heart lies the

At its heart lies the state-of-the-art automatic Powermatic movement

Its elite internal engineering features a patented Silicon (Silicium) balance spring within its self-winding movement

or hundreds of metres below the surface of the sea

Enclosed in a 28 mm case

Blood Pressure Monitor

Tissot Heritage Silver Dial Men 42mm Dial Colour:Silver At its heart lies theA Nivachron balance spring is regarded as far more resistant to and unaffected by magnetic fields than standard springs. Tissot tests the watch's ability to resist impacts and pressure, as well as the penetration of liquids, gas and dust by replicating the real life conditions in which the watch may find itself.