Tissot T-Classic Blue Dial Men 44mm T-Classic While the PR 100 collection

While the PR 100 collection celebrates strength

using the best in watch technology as well as outstanding style

While it is possible to swim with a water-resistant watch

Transparent case back

Tissot T-Classic Blue Dial Men 44mm T-Classic While the PR 100 collectionA sapphire crystal gives a watch the following properties: extremely high resistance to impact and superior screen and hand readability thanks to its transparency. Because it is the strongest material after diamonds, it is used in fine timepieces for its anti scratch prowess. Sapphire crystals can take many forms and give the watch a variety of looks: flat, domed, concave or ground.