Sinn Model 144 St Sa
Since being founded in 1961, German watchmaker Sinn has specialized in navigation clocks professional pilot watches. And while they do not produce their own movements in-house, they have developed a number of their own technologies, such as: a lubrication free escapement (DIAPAL), an anti-foggin technology (Ar-Dehumidifying) and TEGIMENT (a way of hardening steel to greatly increase scratch resistance).
The Sinn Model 144 St Sa is a pilot chronograph which comes in a 41 mm x 14.5 mm stainless steel case with a bead-blasted matte finish. It features a sapphire crystal in front and back (both with an interior anti-reflective treatment). The case back is secured with screws and the crown screws down. Water-resistance is 200 meters.





