IWC Schaffhausen, a Swiss watchmaker, is proud of its superior engineer constant-power tourbillon watch in the high-end watch industry, consolidating its top position in watch design. In order to achieve an extremely uniform travel time, the watchmaker integrated a patented constant power mechanism into the tourbillon—a masterpiece of engineering.
High-end watchmaking has one thing in common with F1TM-Formula One: Only when engineers make all parts work together perfectly can the technology be used to its full potential. Only in this way can high-tech masterpieces achieve the best performance, whether on the track or on the wrist. Just as the V8 engine is suitable for acceleration and braking at extreme speeds, the manual winding device of a mechanical watch should also provide as stable power as possible during the travel period. However, the tension of the mainspring of a conventional manual winding movement in the initial state is always greater than the end state, and the resulting power is constantly changing. IWC’s research and development team consisting of engineers, watchmakers and designers took 10 years to explore this challenge, and the end result is remarkable: a very complex constant power integrated into the tourbillon The mechanism was born. This IWC research and development was first applied in the engineer’s constant-power tourbillon watch (model IW590001) in the engineer’s watch family in 2013, the watch uses platinum and ceramic case.
Constant power tourbillon-the heart of timepieces
The constant-power tourbillon is located at the ‘9 o’clock’ position, which is breathtaking and breathtaking, giving people a glimpse of the fascinating architecture of its multilayer structure. For precision machinery enthusiasts, it is a special enjoyment to watch the high-precision and complex operation of clockwork, gear trains and forks. The black tourbillon bridge is very eye-catching, with a countdown and black screws, which emphasize the technological temperament of the dial. In sharp contrast is the delicate, gold-shimmering Glucydur® * beryllium alloy balance wheel, which is equipped with a high-precision fine-tuning cam. The tourbillon makes one rotation in 60 seconds, which is designed to offset the error caused by the gravity of the balance wheel on one side, and thus offset the deviation of the travel time rate. Visible inside the tourbillon is the constant dynamic mechanism integrated into it-the true heart of the timepiece. This ingenious mechanism decouples the escapement from the direct power transmission of the gear train, thereby ensuring that the amplitude of the balance wheel is stable, thereby making the travel time rate almost constant. The power is temporarily stored in the hairspring and delivered to the escape wheel. The hairspring is tightened once every second. You can observe that the tourbillon hand also jumps forward in seconds. After every 5 single swings of the balance wheel, the brake wheel and tourbillon carrier also start to operate. The rotation of the brake wheel causes the tourbillon carrier to rotate, thereby causing the hairspring to be tensioned again. After about 2 days, the constant power mode will switch to normal mode: At this time, the second hand will jump in every fifth of a second. The constant-power tourbillon can ensure an absolutely even and accurate travel time for at least 48 hours.
The newly-developed IWC manual-winding 94900-based basic movement combines the power of two barrels into one, which can provide the larger torque required for a constant-power tourbillon. In addition, it provides the power needed to drive the moon phase display. IWC’s classic dual moon phase display in the northern and southern hemispheres also debuted with a completely new look. As far as its position on the upper right is concerned, it is already outstanding, not to mention the moon is so vivid. With the help of a special three-dimensional laser processing procedure, its surface can be as realistic as possible, and even tiny craters can be seen. The countdown display on the outer circle of the totalizer is used to display the number of days from the next profitable month. The power reserve display between ‘4 o’clock’ and ‘5 o’clock’ is an innovative masterpiece of IWC. It adopts a retrograde design and displays the remaining winding power through a triangular pointer. The connecting bridge is cleverly designed and will not hide the IWC logo during the 96-hour walk of the watch. Three accumulators are embedded in the bezel, the design of which is inspired by technical instruments, further highlighting the chic sports characteristics of the watch. The dial’s black tones are subtle, with a black high-tech ceramic bezel and a solid platinum crown guard, making the watch’s quiet, technological temperament a natural fit. On the inner circle of the watch, you can see a classic icon with a long history, which is composed of a nested uppercase letter ‘I’ and a slender serif. The letter symbolizes the engineer (Ingenieur) and also gives the relief pattern a special depth.
A closer look at the ‘engine’
Looking at the engineer’s constant-power tourbillon watch from the side of the movement is like looking at the engine compartment of a sports car. Corresponding to the drilled holes in the bezel of the front cover, the sapphire glass ring on the case is also embedded with 5 titanium screws with ceramic screw caps. The sandblasted and satin-finished surface of the movement’s base plate and the polished corners complement each other, reminiscent of high-performance cutting-edge engines. The intermeshing gears make the sight linger, and the engravings show the technical details-all the design elements are carefully selected and cooperate with each other, which is an excellent expression of power and dynamics.
Swiss watchmaker IWC Schaffhausen has dedicated itself to technology and research and development, and has been making watches of lasting value since 1868. The company eagerly pursues innovative solutions and original technologies, and has won wide acclaim internationally. As one of the world’s leading brands in the field of luxury watches, IWC combines precision and unique design to create a model that reflects the highest state of fine watchmaking art.
Mechanical movement — Power reserve display — Precision moon phase display — North and South hemisphere dual moon phase display — Countdown to display the number of days from the next profitable month — Constant power tourbillon — Glucydur® * beryllium alloy balance wheel, balance arm configuration Fine-tuning cam — screw-in crown — transparent sapphire case back
Caliber 94800 Vibration frequency 18000 times per hour / 2.5 Hz Gems 43 pieces Power reserve 96 hours
Winding up Manual winding
Material of the watch Platinum and ceramic case, black dial, black alligator leather strap, platinum pin buckle Table mirror Double-sided anti-reflective flat sapphire glass Water resistance 12 bar Diameter 46 mm
Thickness 14 mm