modname=ckeditor Package include: 1.Original Tourbillon Watch 2.Watch box 3.Warranty Card Product parameter: Movement: Original tourbillon skeleton movement Waterproof: 50M Watch mirror: synthetic sapphire Strap material: first layer cowhide Dial features: double-sided hollow design Case material: stainless steel Dial thickness: 12mm Dial diameter: 42.5mm Frequency: 28800Hz/Hr Energy storage: 40 hours Travel time error: ±10 seconds/day Warranty : 3 years Tourbillon Introduction: Tourbillon is a kind of clock speed regulating device invented by watch master Louis Baoji in 1795. The purpose of the flywheel mechanism is to correct the errors caused by gravity. Tourbillon watch represents the highest level in the manufacturing process of mechanical watch, and has always been known as the "king of the watch".