In order to enjoy the essence of Audemars Piguet Royal Oak Offshore automatic tourbillon chronograph, you must close your eyes first, turn over the case back, then open your eyes and carefully appreciate. In the sturdy case, the sapphire crystal case back locked by eight polished stainless steel screws protects the genuine treasure – Cal.2897 automatic movement along with tourbillon and chronograph. Its 335 components are polished, modified and decorated by hand, creating the alternation of light and shade, beautiful reflection effect, then assembling a fabulous movement. To make sure the wrap-around round automatic plate of the self-winding, column wheel chronograph and accurate tourbillon make Royal Oak Offshore tourbillon chronograph become the masterpiece of Swiss haute horologe. Looking back the front face of the watch, you can’t wait to be attracted by its strong and modern temperament. Robust and famous watch shows the classic features of Royal Oak Offshore, forging the carbon case circle, black ceramic bezel and black rubber strap constituting the elegant and harmonious appearance. Royal Oak Offshore tourbillon chronograph hiddens an exquisite movement under its heroic appearance. Both sides perfectly combine with the outstanding masterpiece of watchmaking, which is spectacular.
Cal.2897 self-winding movement
100% Audemars Piguet self-made movement
Cal.2897 self-winding movement is entirely designed and manufactured by Audemars Piguet, both Tourbillon and column-wheel chronograph two complex functions. On the movement of the structure, it is the Audemars Piguet watch the highest tribute to the traditional. Side of the curved bridge decks, S-shaped rod, minute timer span of the curve and the typical column-wheel and the dentate are no less than any work of art, people almost forget who turned out to be of practical use mechanical devices.
Seiko decorative components inherited the tradition of Swiss watchmaking: the perfect bright polished surface of the component technology to send a number of mirror-like brilliance. This requires continuous use of mirror-polishing rasp, rod polishing finishing, polishing machines and a variety of abrasives, grinding process after more than can be achieved after the unparalleled optical effect. For all of the concave corner and convex corner, and side is required to remove the surface between the sharp edges and corners, the angle of the ground into a smooth, this is the so-called chamfer grinding. All components of this movement are polished by hand carefully chamfer. Rhodium-plated bridge decks and board, chamfered and polished pearl dots, and surface treatment by sandblasting the fog, the outer edge of the line by hand rasp. After the completion of decorative components eleven, watchmakers will carry out preliminary assembly to determine the movement to run properly. Then open the movement, the scrubbed and then re-mix component eleven, and finally into the case. Therefore, made a movement at least 15 days working hours, then need to go through a number of tests to ensure flawless movement.
Combination of power and beauty of the wrap-around semi-circular rotor

All components of this movement are polished by hand carefully chamfer.
950 platinum plate surround-type ball bearings to ensure efficient automatic self-winding. Due to the automatic plate around the periphery of the movement, it can significantly reduce the weight of the movement, speed up the rate of automatic winding. Watchmaker in the circle inside the dug in case a groove, the semi-circular plate can be automatically carried out at 360 ° around the tank. Automatically set the size of the semi-circular design just right, it can optimize the efficiency of automatic winding. In addition, the movement in the periphery of the disc will not automatically increase the thickness of the movement, the movement can remain slim. In appearance, since there is no shelter movement back through the transparent sapphire crystal case back, magnificent column-wheel chronograph device panoramic view.
So that the audience totally selfless Tourbillon
Among the many watch brands can be made by a handful of Tourbillon. As the gravity of the master control, Audemars Piguet has so far created more than sixteen different models with a tourbillon movement, and in 1986’s first ultra-thin self-winding Tourbillon watch.
Tourbillon is a watchmaker challenge gravity of the weapon, because this device can offset the gravity of the balance spring and escapement of interference, so the watch can improve the accuracy of travel time. Tourbillon is the principle of the balance spring and escapement of light as a feather placed in the small movable frame, rotation per minute lap, which offset due to gravity caused by differences in travel time.
Dial at 6 o’clock position with openings, through the crystal mirror and enjoy the beautiful black titanium tourbillon bridge decks. Start Tourbillon is a difficult technique, only the experienced, skillful watchmaker to complete. Tourbillon frame weighs less than 0.45 grams, 0.017 grams of weight you can just keep it balanced. Escapement system weighs only 0.12 grams, so this movement the “heart” can be described as light as a feather. Watchmaker to consummate technology components will be assembled into 85 Tourbillon requires nearly three days, including two days to assemble Tourbillon framework. Time-consuming assembly of the entire movement you need more than 15 days.
Accurate and reliable, handy chronograph device
Cal.2897 unobstructed movement of people a taste of column-wheel chronograph mechanical beauty. Column-wheel chronograph function is to coordinate the start, stop and reset. In the past, such a mechanism will cause when it starts beating chronograph pointer; To correct this shortcoming, Audemars Piguet has developed a clever linkage device, the connecting rod on the addition of a Komagari, can significantly improve chronograph start shock performance. Chronograph device assembly and fine tuning carried out entirely by hand carefully, meticulously. Thus, the chronograph starts to become smooth precision, with the handy.
Royal Oak Offshore’s unique design
Royal Oak Offshore’s name Ruleiguaner, distinguished sports watch and has become synonymous with masculinity. With eight hexagonal screws bright polished steel octagonal bezel with classic appearance, so once again advanced watch connoisseurs feast for the eyes. Black material with delicate precision ceramic decorative octagonal bezel make even better: front fog ruled surface polishing and oblique light into the surface of the polishing surface to form a beautiful contrast to clear the ridge and the edges neat. Forged carbon case in the circle gesture to show noble king, Audemars Piguet is the first to aerospace industry forged carbon material used in the introduction of advanced watch industry watch factory, lightweight forged carbon and tough high-tech ceramics are advanced materials, giving it watch a rich and modern. Watch the right side of sophisticated technology designed to make the case more strong in the circle: the button for the bridge and the case is not one piece, but in four exposed screws will be two titanium metal on the bridge fixed to the case. Button itself using two-tier structure, with the fingers into contact with the upper and lower base. Dial decorated with the Royal Oak Offshore unique “Méga Tapisserie” super Check decoration, full of tension Plaid Royal Oak Offshore reflects the combination of strength and beauty of the essence. 6 o’clock position to expose the surface of the transparent beauty of the tourbillon, decorated with black rubber strap concave pattern of the Royal Oak Offshore with a full range of athletic style.
Technical Data
Audemars Piguet Royal Oak Offshore Automatic Tourbillon chronograph
Model 26550AU.OO.A002CA.01
Forged carbon case; black ceramic bezel, crown and chronograph button; titanium button for the bridge and connecting chain
Movement
Cal.2897 self-winding movement equipped with tourbillon and column-wheel chronograph
Overall diameter: 35 mm (15 ½ points method)
Text only movement assembly outer diameter: 31.40 mm
Thickness: 7.75 mm
34 Ruby
335 Components
Maximum power reserve of 65 hours
Pendulum frequency: 21,600 times / hour (3 Hz)
Adjustable weight balance wheel with screws and springs Phillips curve
Seiko decoration: All components are polished by hand-decorated; rhodium-plated bridge decks, and board, pearl dot polished, sandblasted matte treatment, the outer edge of
Lines by hand rasp; edges are polished by the bright polished, screw lines Slot polished chamfered
950 platinum wrap-automatic plate decorated with semi-circular ring pattern decoration
Case
Diameter: 44 mm
Thickness: 14 mm
Sapphire crystal case, metal outer ring engraved with the words Royal Oak Offshore
Water resistant to 100 meters
Dial
Audemars Piguet black dial is decorated with an exclusive “Méga Tapisserie” Check decorative large, silver timer. Platinum dial fluorescent hour markers. Black outer ring. Platinum three-dimensional fluorescence around the needle.
Watchband
Black rubber strap decorated with two concave lines, standard titanium clasp.
Function
Midnight show
Small seconds (9 o’clock)
Chronograph with central second hand and 30-minute timer meter (3 o’clock)
Outer ring with a gun