watch - Flying tourbillon creates a stir due to its size with a 13 mm diameter tourbillon case. The tourbillon lugs (more commonly called bridges) are inexistant. The rotation axis is held by 2 ruby bearings located in the case (at 5 oclock), enabling the flying Tourbillon to be admired undisturbed. LOWER WATCHMovement :Flying Tourbillon MJ 1948.05Case :18K White GoldFunctions :Hours, minutes, GMTNumber of rubies:25Number of lines:13Total diameter:30,40mmTotal thickness:7mmFrequency:21'600 A/h 3 HzPower reserve: 5 days (120 hours)Strap :1 genuine Alligator strap handstitched.Buckle :Safety butterfly clasp in 18K white gold.