Since its founding in 1961, Sinn Spezialuhren has been renowned for crafting timepieces that combine robust functionality with precise engineering. The 104 St Sa exemplifies this legacy, offering a classic pilot's watch design that appeals to both aviation enthusiasts and watch collectors alike.

The Sinn 104 St Sa features a 41mm polished stainless steel case, providing a sleek and durable exterior. Its clearly structured dial ensures optimal readability, with three hands displaying the time, along with day and date indicators. The bidirectional pilot's bezel with minute ratcheting is securely attached to the case and includes a luminous triangle at the 12 o'clock position for precise time measurement. The watch is powered by the SW 220-1 self-winding movement, offering reliable performance. A sapphire crystal glass protects the dial, while a transparent case back allows for a view of the intricate movement. With water resistance up to 20 bar (200 meters) and low-pressure resistance, the 104 St Sa is built to withstand demanding conditions.

This Sinn 104 St Sa is in near-mint condition and comes as a full set with the steel bracelet and the rubber strap.