The Sinn 157 Day-Date is one of the brand’s most iconic tool chronographs, powered by the legendary Lemania movement that cemented its reputation among enthusiasts. With its angular 1980s case design, matte black dial, and bead-blasted finish, the 157 embodies the rugged, utilitarian look Sinn became famous for—built for clarity, durability, and zero nonsense. The tri-register layout, bold white markers, and oversized hands offer excellent legibility, while the day-date display adds practical functionality without cluttering the dial. It’s a watch that feels purpose-driven from every angle, engineered for people who rely on their gear.

Behind the caseback beats the revered Lemania 5100, known for its central minutes chronograph hand, tank-like reliability, and use in both military and aviation settings. The 157 pairs that movement with Sinn’s infamous commitment to toughness, making it as capable in the field as it is collectible today. On the wrist, it wears with that unmistakable Sinn confidence—toolish, compact, and ready to work. For fans of historic chronographs, German engineering, or Lemania-powered icons, the Sinn 157 stands as one of the brand’s most desirable vintage references: functional, gritty, and absolutely timeless.

Information:

Reference: 157 M

Dated: 2016

Bracelet: Stainless Steel (Bead Blasted)

Case: 40mm x 15mm Thickness - Stainless Steel (Bead Blasted)

Lug Width: 20mm

Dial/hands: Tritium

Movement: Lemainia 5100 - Automatic

Functions: Hours, Minutes, Second, Date, Day, Chronograph

Box and Papers: Inner/outer boxes, and warranty card

Crystal: Sapphire

Bracelet size: 7.5”

Condition:

Case has minimal light wear. Bracelet has minimal light micro wear. Dial, hands, and crystal have no wear. Watch is running (+3 s/d 322 amp).

History of Sinn Watches

Founded in 1961 by Helmut Sinn, a former World War II pilot and blind flight instructor, Sinn Watch Company quickly gained recognition for its aviation-inspired timepieces. Specializing in navigation clocks and pilot chronographs, Sinn's reputation for precision and durability was cemented during the 1980s and 1990s when their watches accompanied German astronauts on several space missions. These accomplishments demonstrated the brand's commitment to creating reliable timepieces capable of withstanding extreme conditions.

A new era began in 1994 when certified engineer Lothar Schmidt acquired the company, introducing significant technological advancements. Under Schmidt's leadership, Sinn pioneered innovations such as Ar-Dehumidifying Technology, DIAPAL lubrication-free escapements, and TEGIMENT hardened steel cases. Today, Sinn remains at the forefront of horological innovation, producing high-quality timepieces that blend traditional craftsmanship with cutting-edge technology. The brand's dedication to excellence and continuous improvement ensures its lasting legacy in the world of high-end watchmaking.

Sinn

Sinn 157 Day-Date Lemania Chronograph