Technical Specifications Item Number: TT100.21.NS.NK.A MOVEMENT: Exclusive Jacob&Co. Manual Winding JCFM01; Size: 34.43mm; Height: 13.2mm; Components: 572; Material: Titanium, Steel; System: Twin Triple Axis Tourbillon with Decimal Minute Repeater; Power Reserve: 72 hours; Frequency: 21’600 vib/h (3Hz); Jewels: 49; Finishing: Hand Angled and Polished Plate and Bridges; Flank Draw, Circular Graining; Circular Barrel and Plate; Polished Screw; Conical Pinions; 4 Mechanical Ball Baring Devices; 2 Screw Balances. FUNCTIONS: Hours, Minutes; Decimal Minute Repeater: Hours, 10 min. and minutes; Cathedral Gongs; 2 Hammers at 12 O’clock; Twin Triple Axis Tourbillon; 1st Axis Flying: in 40 seconds, 2nd Axis Flying: in 3 min, 3rd Axis Flying: in 8 minutes. Regulator between the Two Triple Axis Tourbillon Carriers; Double Mechanical Safety Feature During a Chiming Sequence. CASE: 57.30x51mm; Thickness: 16.90mm; Material: Black DLC Grade 5 Titanium; Crystal: Domed Sapphire Crystal; Case Back: Domed Sapphire Crystal. DIAL & HANDS: Smoked Sapphire with Applied “Jacob & Co.” Logo, Red Neoralithe Inner Ring with Second Graduation; Hands: Black Skeleton with SuperLuminova Coating. STRAP & CLASP: Black Leather; Black DLC Grade 5 Titanium; Deployment buckle. LIMITED EDITION: 18 pieces. World Premiere Combination of a Twin Triple Axis Tourbillon and a Minute Repeater, the Jacob & Co. Xtreme Tourbillon is Resolutely Ahead its Time with a Shape Case and a Distinctive Sportive Allure. In a World Everyday Faster, the Minute Repeater Chimes the Decimal and the Tourbillon 1st axis of rotation is accelerated to 40 secondes. A regulator system guarantees the perfect Balance between the 2 Triple Axis Tourbillon in a Constant Symmetrical Motion.