- Instrument Chronographs - Sinn Duo Chronograph 757 Diapal Special Bracelet (SN-292)
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Sinn's Diapal technology is an amazing breakthrough, since it has allowed for the utilization of a lubrication-free escapement mechanism. This innovation increases the accuracy of the watch in the long run. The 757 Diapal timepiece comes with Valjoux 7750 automatic calibre that performs 28 800 vibrations per hour and has 25 bearing jewels. The case is hardened through the use of Tegiment technology. A dehumidifying capsule protects the mechanism from fogging. Another impressive characteristic is the resilience to magnetic field influences. 757 Diapal has various functionalities including a second time zone, captive pilot's bezel that measures elapsed time, UV-resistant and electroplated dial, a date window at 4 o'clock, luminous dial elements, nickel-free case back and scratch-resistant sapphire crystal glass with anti-reflective coating.
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