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.

Powering the Model 144 is a reliable Swiss made Valjoux 7750 which features 25 jewels, a stop second function with a rate of 28,800 vph (4Hz). It is shock resistant and anti-magnetic. Functions include hours, minutes, subsidiary seconds, date, day of week and chronograph with tachymeter and pulsometer scales.

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The dial is matte black with luminescent coated indices, hour hand and minute hand. The red chronograph counter hands: hour (6 o’clock), minute (12 o’clock) and seconds (central hand) are easy to distinguish at a glance — from the white: hour, minute and sub second timekeeping hands.

Sinn’s proprietary Ar-Dehumidyfing Technology is optional (although humidity in the case is not typically a problem for a water-resistant timepiece). Available in a choice of rubber strap, leather strap or metal bracelet (shown).

Sinn makes rugged and reliable professional watches for a fraction of the price you would expect to pay for a brand like Bell & Ross or Bremont (who make comparable instrument timepieces) but spend more on marketing and therefore have higher costs that results in higher prices.

Ref. 144 St Sa (144.066)

Retail $1,899 (leather strap)

Jason Pitsch
Posted by:Jason Pitsch

Author, photographer, and editor. Jason on Linkedin.