The le locle collection was first introduced in 2003 to commemorate the 150th anniversary of tissot. This watch is a piece of history, embodying the spirit of innovation that has defined the brand for over a century. 39. 3mm stainless steel case with rose gold-tone pvd coating; see-through case back green clous de paris “guilloche” dial in the form of small pyramids; roman numeral indices scratch-resistant sapphire crystal swiss automatic movement rose gold-tone pvd-coated stainless steel interchangeable quick release bracelet water-resistant to 30 meters