Haute Horlogerie in a sapphire crystal case: Zenith DEFY 21 Double Tourbillon and DEFY Zero Gravity
Zenith presents two special models in the DEFY collection, combining a unique mechanism with a sapphire crystal case. Zenith DEFY Zero-G has a mechanism that keeps the balance in a horizontal position at all times. This is to avoid the negative effects of gravity. The DEFY 21 Double Tourbillon has a tourbillon for the main time and a tourbillon for the high-frequency timekeeping. However, both models feature the recurring star pattern as the spatial theme, which is the hallmark of the watchmaker.
Zenith DEFY Zero Gravity Sapphire The watch has a 46mm case made of sapphire crystal. This allows the mechanism to be viewed from all sides. Only the crown is not made of sapphire crystal. The off-centre dial is handcrafted from meteorite, aventurine and Grand Feu enamel and is based on a gold base. Meanwhile, the small seconds hand represents our neighboring Mars, partially covered by the main time. Last but not least, Zenith provides the watch with a power reserve indicator between two and three o'clock.
beyond gravity The highlight of the watch is the "gravity control" mechanism of the El Primero 8812 S movement. The balance is suspended so that it is always in a horizontal position. This prevents the negative effects of gravity. For the first time, the Manufacture has embedded this technology in an open movement. In reference to the sky, the blue movement is decorated with white stars of varying sizes. The back of the adjustment mechanism is also reminiscent of the rough texture and craters of the moon.
Zenith DEFY 21 Double Tourbillon Sapphire This watch features a 46mm case also made entirely of sapphire crystal. Beyond that, though, there are buttons on the side that control the high-frequency chronograph. Two star-shaped tourbillons dominate the front. In addition, there are many small stars on the skeleton dial. Here, however, the luminous hands also indicate the time. In addition, the periphery of the ring features faceted hour and minute indexes. The dial also has a scale to measure hundredths of a second.
Movement with two tourbillons The Zenith DEFY 21 Double Tourbillon Sapphire houses the El Primero 9020 movement, which offers two escapements with different frequencies. This allows the chronograph to measure hundredths of a second. Here, however, the two balance wheels are embedded in two tourbillons. The tourbillon, which regulates the main time, completes one revolution in 60 seconds. On the other hand, the tourbillon of the chronograph completes one revolution in 5 seconds. The central chronograph hand circles the dial in just one second to demonstrate the extremely high frequency of 50 Hz.
Last but not least, the DEFY 21 Double Tourbillon Sapphire offers self-winding with a power autonomy of 50 hours. The manufacturer continues the space theme of the movement. Blue PVD coated with engraved stars. The watch also comes with an Observatory certificate from COSC. This means that despite technical improvements, it achieves a maximum rate deviation of -4/+6 seconds per day.
The watch comes with a blue "Cordura effect" rubber strap and a titanium double folding clasp.
Brand Zenith MODEL DEFY Zero Gravity Sapphire DEFY 21 Double Tourbillon Sapphire Reference DEFY Zero Gravity Sapphire 04.9000.8812/00.R920 DEFY 21 Double Tourbillon Sapphire 04.9000.9020/00.R920 Case material Sapphire crystal Size defies zero gravity sapphire Diameter: 46mm DEFY 21 Double Tourbillon Sapphire Diameter: 46mm Waterproof 3 bar (~30 m) DIAL DEFY Zero Gravity Sapphire Skeletons, Meteorites and Aventurine DEFY 21 Double Tourbillon Sapphire Skeletonization Strap/Bracelet Blue 'Cordura Effect' rubber and grey stitching. Titanium Double Folding Clasp Movement DEFY Zero Gravity Sapphire El Primero 8812S DEFY 21 Double Tourbillon Sapphire El Primero 9020 Movement type DEFY Zero Gravity Sapphire manual DEFY 21 Double Tourbillon Sapphire automatic Power reserve 50 hours FREQUENCY DEFY Zero Gravity Sapphire 36,000 cycles/hour (5 Hz) DEFY 21 Double Tourbillon Sapphire 1x 36,000 vph (5 Hz) 1x 360,000 vph (50 Hz) Features of Zero Gravity Sapphire Hours, minutes, small seconds, power reserve display DEFY 21 Double Tourbillon Sapphire Hours, minutes, chronograph, chronograph power reserve indicator