Konstantin Chaykin’s Space-Tested SC02C Chronograph: A Mechanical Marvel for Cosmonauts

Konstantin Chaykin’s SC02C chronograph represents a groundbreaking collaboration with Roscosmos, Russia’s space agency, to create a mechanical watch designed for extreme conditions. Developed specifically for extravehicular activity (EVA) during spacewalks, the SC02C was rigorously tested in orbit and recently used by cosmonauts during an over 6-hour spacewalk on May 27, 2026. The limited-edition timepiece features a 44mm stainless steel case with a unidirectional bezel, sapphire crystal with anti-reflective coating, and a reverse ‘dovetail’ construction to withstand vacuum conditions down to 1 × 10^-6 atmospheres. Its antimagnetic protection (rated to 4,800 A/m) and 100m water resistance ensure durability in harsh environments. The movement, based on the historic Poljot 3133 caliber, includes modifications by Chaykin such as a 12-hour chronograph counter, stop-seconds function, and micrometric balance adjustment. The watch’s design incorporates practical elements for space use, like a red-tipped hour hand aiding time measurement during EVA. With only 28 pieces available, the SC02C bridges professional aerospace engineering with luxury horology, offering wearers a piece of space-tested technology. Its technical specifications highlight meticulous attention to detail, from the luminous dial and legible markers to the damping ring protecting against vibrations. This watch is not merely inspired by space exploration but was developed and tested for it, making it a unique addition to the world of mechanical chronographs.