Famed for creating robust and functional watches that are crafted for professionals facing extreme conditions, the Sinn EZM4 Achilles Day-Date Chronograph epitomizes the thoughtful design that has embodied the German watchmaker’s timepieces for decades. Showcasing the peak of mechanical durability and designed specifically for doctors, paramedics, and firefighters who require reliable performance in environments where a functioning watch could the difference in life or death, the EZM4 comes fitted with an information-dense dial with a day and date display alongside a chronograph and a pulsation scale along its periphery that can be used to determine a patient’s heart rate. Boasting a 40mm sand-blasted stainless steel case on an integrated bracelet and featuring a color-coded section for its scale, the EZM4 showcases that while Sinn might be best-known for pilot’s watches, they can make an incredible watch for front-line health workers too.

Watch is in near-mint condition. There are minor signs of use, with some scuffing along the bracelet clasp and some minor wear along the case. There are 10 links total, with 4 additional on the side. It fits an 8" wrist.

A rather unique piece of horology that blends utilitarian design with the pilot watch type of functionality that Sinn are famed for, the EZM4 is perhaps one of the German watchmaker's most unique-looking watches.