Curvy Purity Tourbillon

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ArtyA exclusive double barrel Curvy Tourbillon movement,
An incredible skeletonized design, with a skeletonization
to the extreme: minimalist and pure.
Cast iron sandblasted and hand-angled balance bridge
Dial sandblasted with cast iron and hand-angled 
Sandblasted and diamond-coated machine gear bridge
Sandblasted and hand-angled motion work bridge
Very high chronometric reliability due to the torque of the double barrels
4 Hz, much higher than most existing tourbillons, providing stability.
Oversized tourbillon with a diameter of 18mm !
Tourbillon with fixed stud and traditional adjustment
Hour, Minutes, Seconds on flying tourbillon
Power reserve: 72h
Case in Sapphire
Special curved back to fit the shape of the wrist
Size: 38,5x43 mm
Sapphire open and screwed case back 
Water resistance to 30 meters
Special custom strap 
Swiss manufactured
Limited to 13 pieces