- BandFabric Strap & Leather Strap
- Case MaterialSteel
- ConditionBrand New
Sinn Flieger 857 Automatic Pilots Watch
Sinn Flieger 857 automatic pilot’s wristwatch. This is a modified version of its predecessor, the Sinn 656, which is one of Sinn’s best selling models. It has been modified and upgraded to include a Tegimented case and copper sulphate water absorbing capsule. The watch case hardened using Tegiment technology provides extremely effective protection from scratches on the case surface. To achieve this, we do not apply any coatings of foreign materials; rather, the surface of the watch case itself is hardened in a special process. To keep the cases of Sinn watches in the best possible condition when they are worn, A Tegimented stainless steel case has a surface hardness of approximately 1200 Vickers. This value corresponds roughly to the hardness of commonly used zirconium oxide ceramics. By comparison, an unhardened stainless steel case has a hardness of approximately 220 Vickers. It also has Ar-Dehumidifying technology which solves a basic problem of mechanical watches: the aging of oils due to moisture in the air contained inside, or diffusing into, the watch. The movement is mounted in a nearly anhydrous atmosphere thanks to the three Ar-Dehumidifying technology elements of drying capsule, EDR seals and protective gas filling. Aging processes and fogging of the crystal from sudden cold are prevented, and reliable functioning and accuracy are ensured. It also has been modified to a pilot style rotating bezel. This is a bi directional ratchet operated sturdy rotating bezel. Like the rest of the dial design, the numerics on the bezel are big and bold and symmetrically laid out. The dial is likewise symmetrical and even, with a strong emphasis on design. It has 4 large prime hour numbers, jet black with white markings and hands giving maximum visibility and clarity. The design is based on an aircraft clock. As well as being a lovely practical looking watch, it is highly functional and is extremely resistant to magnetic interference, and has a strong well finished crystal and case. There is a small date window between the 4 and 5 hour markings. It is small so not to interfere with the numeric symmetry of this beautifully designed watch. Sandblasted stainless steel case and bracelet. The watch features a 21 jewel a Swiss made automatic Seletta movement working at 28.800 semi-oscillations per hour, Seconds stop function for accurate time setting, shock resistant as per DIN 8308, anti-magnetic as per DIN 8309. It has a screw down crown and case back, 20 ATM water resistance, high quality stitched leather strap and signed buckle, stop seconds for accurate time setting, sapphire crystal with anti reflective coating, presentation box. Width is 40 mm at widest excluding crown and 43 mm including crown, Lug to lug is 46 mm, Thickness is 12 mm.