Tissot Ballade watches

Tissot showed the current Tissot Ballade at Baselworld 2017. Its signature is a Clous de Paris pattern on the bezel and on an inner disc of the dial, a nod to 1930s style. Every 2017 model has a steel case, a date at 3 o'clock, a sapphire crystal, a display caseback and 50 m water resistance.

Inside is the Powermatic 80, Tissot calibre C07.811 Si. It is based on the ETA 2824 but runs at 3 Hz (21,600 vph) rather than the ETA's 4 Hz, and its power reserve rises to 80 hours from the basic ETA's 38, which is where the name comes from. In the Ballade it has a silicon hairspring and is COSC-certified as a chronometer, to -4/+6 seconds a day.

At launch the men's Ballade Powermatic 80 came in 39 mm and 41 mm, and the COSC 32 is the 32 mm ladies' model with a white mother-of-pearl dial. Some Powermatic 80 cases carry a rose or yellow gold PVD coating over the steel.

The Ballade III comes as the Ballade III Automatic, 39.5 mm and 9.5 mm thick, or the much slimmer Ballade III Quartz, 39.5 mm and 6.87 mm thick, and both are made in a 28 mm ladies' size. Their references start T97 for the Automatic and T031 for the Quartz, against T108 for the Powermatic 80.